Home / 7,631.20-11,440.18-3,411.24

Finding the Fourth Proportional to 7,631.20, 11,440.18 and 3,411.24

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Solution

The fourth proportional to 7,631.20, 11,440.18 and 3,411.24 is: 5,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.20 : 11,440.18 = 3,411.24 : x
  2. Step 2: Convert to fraction form
    7,631.20/11,440.18 = 3,411.24/x
  3. Step 3: Cross multiply
    7,631.20x = 11,440.18 × 3,411.24
  4. Step 4: Simplify right side
    7,631.20x = 39,025,199.62
  5. Step 5: Solve for x
    x = 39,025,199.62/7,631.20
  6. Step 6: Final answer
    x = 5,113.90

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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.