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Finding the Fourth Proportional to 8,663.31, 12,993.95 and 2,423.81

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Solution

The fourth proportional to 8,663.31, 12,993.95 and 2,423.81 is: 3,635.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.31 : 12,993.95 = 2,423.81 : x
  2. Step 2: Convert to fraction form
    8,663.31/12,993.95 = 2,423.81/x
  3. Step 3: Cross multiply
    8,663.31x = 12,993.95 × 2,423.81
  4. Step 4: Simplify right side
    8,663.31x = 31,494,814.61
  5. Step 5: Solve for x
    x = 31,494,814.61/8,663.31
  6. Step 6: Final answer
    x = 3,635.43

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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.