Home / 5,072.79-7,609.20-1,785.12

Finding the Fourth Proportional to 5,072.79, 7,609.20 and 1,785.12

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Solution

The fourth proportional to 5,072.79, 7,609.20 and 1,785.12 is: 2,677.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072.79 : 7,609.20 = 1,785.12 : x
  2. Step 2: Convert to fraction form
    5,072.79/7,609.20 = 1,785.12/x
  3. Step 3: Cross multiply
    5,072.79x = 7,609.20 × 1,785.12
  4. Step 4: Simplify right side
    5,072.79x = 13,583,335.10
  5. Step 5: Solve for x
    x = 13,583,335.10/5,072.79
  6. Step 6: Final answer
    x = 2,677.69

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.