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Finding the Fourth Proportional to 8,777.62, 12,112.34 and 5,000.64

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Solution

The fourth proportional to 8,777.62, 12,112.34 and 5,000.64 is: 6,900.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.62 : 12,112.34 = 5,000.64 : x
  2. Step 2: Convert to fraction form
    8,777.62/12,112.34 = 5,000.64/x
  3. Step 3: Cross multiply
    8,777.62x = 12,112.34 × 5,000.64
  4. Step 4: Simplify right side
    8,777.62x = 60,569,381.47
  5. Step 5: Solve for x
    x = 60,569,381.47/8,777.62
  6. Step 6: Final answer
    x = 6,900.44

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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.