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Finding the Fourth Proportional to 8,657.30, 12,989.15 and 8,337.30

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Solution

The fourth proportional to 8,657.30, 12,989.15 and 8,337.30 is: 12,509.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.30 : 12,989.15 = 8,337.30 : x
  2. Step 2: Convert to fraction form
    8,657.30/12,989.15 = 8,337.30/x
  3. Step 3: Cross multiply
    8,657.30x = 12,989.15 × 8,337.30
  4. Step 4: Simplify right side
    8,657.30x = 108,294,440.30
  5. Step 5: Solve for x
    x = 108,294,440.30/8,657.30
  6. Step 6: Final answer
    x = 12,509.03

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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.