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Finding the Fourth Proportional to 3,570.77, 4,927.28 and 1,998.56

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Solution

The fourth proportional to 3,570.77, 4,927.28 and 1,998.56 is: 2,757.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.77 : 4,927.28 = 1,998.56 : x
  2. Step 2: Convert to fraction form
    3,570.77/4,927.28 = 1,998.56/x
  3. Step 3: Cross multiply
    3,570.77x = 4,927.28 × 1,998.56
  4. Step 4: Simplify right side
    3,570.77x = 9,847,430.09
  5. Step 5: Solve for x
    x = 9,847,430.09/3,570.77
  6. Step 6: Final answer
    x = 2,757.79

Related Problems

Find fourth proportional to 1,785.38, 2,463.64 and 999.28
Half scale
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Double scale
Find fourth proportional to 3,571.77, 4,928.65 and 1,999.56
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.