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Finding the Fourth Proportional to 8,720.23, 12,033.89 and 4,944.13

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Solution

The fourth proportional to 8,720.23, 12,033.89 and 4,944.13 is: 6,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.23 : 12,033.89 = 4,944.13 : x
  2. Step 2: Convert to fraction form
    8,720.23/12,033.89 = 4,944.13/x
  3. Step 3: Cross multiply
    8,720.23x = 12,033.89 × 4,944.13
  4. Step 4: Simplify right side
    8,720.23x = 59,497,116.57
  5. Step 5: Solve for x
    x = 59,497,116.57/8,720.23
  6. Step 6: Final answer
    x = 6,822.88

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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.