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Finding the Fourth Proportional to 8,943.42, 13,349.72 and 8,292.90

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Solution

The fourth proportional to 8,943.42, 13,349.72 and 8,292.90 is: 12,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.42 : 13,349.72 = 8,292.90 : x
  2. Step 2: Convert to fraction form
    8,943.42/13,349.72 = 8,292.90/x
  3. Step 3: Cross multiply
    8,943.42x = 13,349.72 × 8,292.90
  4. Step 4: Simplify right side
    8,943.42x = 110,707,892.99
  5. Step 5: Solve for x
    x = 110,707,892.99/8,943.42
  6. Step 6: Final answer
    x = 12,378.70

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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.