Home / 7,479.12-11,187.84-6,147.87

Finding the Fourth Proportional to 7,479.12, 11,187.84 and 6,147.87

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Solution

The fourth proportional to 7,479.12, 11,187.84 and 6,147.87 is: 9,196.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.12 : 11,187.84 = 6,147.87 : x
  2. Step 2: Convert to fraction form
    7,479.12/11,187.84 = 6,147.87/x
  3. Step 3: Cross multiply
    7,479.12x = 11,187.84 × 6,147.87
  4. Step 4: Simplify right side
    7,479.12x = 68,781,385.90
  5. Step 5: Solve for x
    x = 68,781,385.90/7,479.12
  6. Step 6: Final answer
    x = 9,196.45

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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.