Home / 3,036.09-4,190.22-1,988.76

Finding the Fourth Proportional to 3,036.09, 4,190.22 and 1,988.76

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Solution

The fourth proportional to 3,036.09, 4,190.22 and 1,988.76 is: 2,744.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,036.09 : 4,190.22 = 1,988.76 : x
  2. Step 2: Convert to fraction form
    3,036.09/4,190.22 = 1,988.76/x
  3. Step 3: Cross multiply
    3,036.09x = 4,190.22 × 1,988.76
  4. Step 4: Simplify right side
    3,036.09x = 8,333,357.64
  5. Step 5: Solve for x
    x = 8,333,357.64/3,036.09
  6. Step 6: Final answer
    x = 2,744.76

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Half scale
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Double scale
Find fourth proportional to 3,037.09, 4,191.60 and 1,989.76
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.