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Finding the Fourth Proportional to 3,570.72, 4,927.55 and 1,998.81

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Solution

The fourth proportional to 3,570.72, 4,927.55 and 1,998.81 is: 2,758.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570.72 : 4,927.55 = 1,998.81 : x
  2. Step 2: Convert to fraction form
    3,570.72/4,927.55 = 1,998.81/x
  3. Step 3: Cross multiply
    3,570.72x = 4,927.55 × 1,998.81
  4. Step 4: Simplify right side
    3,570.72x = 9,849,236.22
  5. Step 5: Solve for x
    x = 9,849,236.22/3,570.72
  6. Step 6: Final answer
    x = 2,758.33

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Double scale
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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.