Home / 3,453.28-4,785.67-3,387.64

Finding the Fourth Proportional to 3,453.28, 4,785.67 and 3,387.64

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Solution

The fourth proportional to 3,453.28, 4,785.67 and 3,387.64 is: 4,694.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.28 : 4,785.67 = 3,387.64 : x
  2. Step 2: Convert to fraction form
    3,453.28/4,785.67 = 3,387.64/x
  3. Step 3: Cross multiply
    3,453.28x = 4,785.67 × 3,387.64
  4. Step 4: Simplify right side
    3,453.28x = 16,212,127.12
  5. Step 5: Solve for x
    x = 16,212,127.12/3,453.28
  6. Step 6: Final answer
    x = 4,694.70

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.