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Finding the Fourth Proportional to 8,279.76, 12,425.04 and 7,612.32

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Solution

The fourth proportional to 8,279.76, 12,425.04 and 7,612.32 is: 11,423.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.76 : 12,425.04 = 7,612.32 : x
  2. Step 2: Convert to fraction form
    8,279.76/12,425.04 = 7,612.32/x
  3. Step 3: Cross multiply
    8,279.76x = 12,425.04 × 7,612.32
  4. Step 4: Simplify right side
    8,279.76x = 94,583,380.49
  5. Step 5: Solve for x
    x = 94,583,380.49/8,279.76
  6. Step 6: Final answer
    x = 11,423.44

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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.