Home / 7,487.28-10,331.82-4,129.92

Finding the Fourth Proportional to 7,487.28, 10,331.82 and 4,129.92

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Solution

The fourth proportional to 7,487.28, 10,331.82 and 4,129.92 is: 5,698.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.28 : 10,331.82 = 4,129.92 : x
  2. Step 2: Convert to fraction form
    7,487.28/10,331.82 = 4,129.92/x
  3. Step 3: Cross multiply
    7,487.28x = 10,331.82 × 4,129.92
  4. Step 4: Simplify right side
    7,487.28x = 42,669,590.05
  5. Step 5: Solve for x
    x = 42,669,590.05/7,487.28
  6. Step 6: Final answer
    x = 5,698.94

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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.