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Finding the Fourth Proportional to 8,739, 12,043.08 and 5,589.72

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Solution

The fourth proportional to 8,739, 12,043.08 and 5,589.72 is: 7,703.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739 : 12,043.08 = 5,589.72 : x
  2. Step 2: Convert to fraction form
    8,739/12,043.08 = 5,589.72/x
  3. Step 3: Cross multiply
    8,739x = 12,043.08 × 5,589.72
  4. Step 4: Simplify right side
    8,739x = 67,317,445.14
  5. Step 5: Solve for x
    x = 67,317,445.14/8,739
  6. Step 6: Final answer
    x = 7,703.11

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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.