Home / 8,539.11-11,789.40-6,545.90

Finding the Fourth Proportional to 8,539.11, 11,789.40 and 6,545.90

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Solution

The fourth proportional to 8,539.11, 11,789.40 and 6,545.90 is: 9,037.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.11 : 11,789.40 = 6,545.90 : x
  2. Step 2: Convert to fraction form
    8,539.11/11,789.40 = 6,545.90/x
  3. Step 3: Cross multiply
    8,539.11x = 11,789.40 × 6,545.90
  4. Step 4: Simplify right side
    8,539.11x = 77,172,174.51
  5. Step 5: Solve for x
    x = 77,172,174.51/8,539.11
  6. Step 6: Final answer
    x = 9,037.50

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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.