Home / 7,487.40-11,237.90-3,792.20

Finding the Fourth Proportional to 7,487.40, 11,237.90 and 3,792.20

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Solution

The fourth proportional to 7,487.40, 11,237.90 and 3,792.20 is: 5,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.40 : 11,237.90 = 3,792.20 : x
  2. Step 2: Convert to fraction form
    7,487.40/11,237.90 = 3,792.20/x
  3. Step 3: Cross multiply
    7,487.40x = 11,237.90 × 3,792.20
  4. Step 4: Simplify right side
    7,487.40x = 42,616,364.38
  5. Step 5: Solve for x
    x = 42,616,364.38/7,487.40
  6. Step 6: Final answer
    x = 5,691.74

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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.