Home / 8,677.18-11,973.88-5,139.70

Finding the Fourth Proportional to 8,677.18, 11,973.88 and 5,139.70

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Solution

The fourth proportional to 8,677.18, 11,973.88 and 5,139.70 is: 7,092.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,677.18 : 11,973.88 = 5,139.70 : x
  2. Step 2: Convert to fraction form
    8,677.18/11,973.88 = 5,139.70/x
  3. Step 3: Cross multiply
    8,677.18x = 11,973.88 × 5,139.70
  4. Step 4: Simplify right side
    8,677.18x = 61,542,165.97
  5. Step 5: Solve for x
    x = 61,542,165.97/8,677.18
  6. Step 6: Final answer
    x = 7,092.42

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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.