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Finding the Fourth Proportional to 8,509.20, 12,693.05 and 8,373.12

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Solution

The fourth proportional to 8,509.20, 12,693.05 and 8,373.12 is: 12,490.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.20 : 12,693.05 = 8,373.12 : x
  2. Step 2: Convert to fraction form
    8,509.20/12,693.05 = 8,373.12/x
  3. Step 3: Cross multiply
    8,509.20x = 12,693.05 × 8,373.12
  4. Step 4: Simplify right side
    8,509.20x = 106,280,388.95
  5. Step 5: Solve for x
    x = 106,280,388.95/8,509.20
  6. Step 6: Final answer
    x = 12,490.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.