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Finding the Fourth Proportional to 8,373.76, 12,572.18 and 5,430.62

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Solution

The fourth proportional to 8,373.76, 12,572.18 and 5,430.62 is: 8,153.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,373.76 : 12,572.18 = 5,430.62 : x
  2. Step 2: Convert to fraction form
    8,373.76/12,572.18 = 5,430.62/x
  3. Step 3: Cross multiply
    8,373.76x = 12,572.18 × 5,430.62
  4. Step 4: Simplify right side
    8,373.76x = 68,274,732.15
  5. Step 5: Solve for x
    x = 68,274,732.15/8,373.76
  6. Step 6: Final answer
    x = 8,153.41

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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.