Home / 8,940.20-12,339.24-5,165.82

Finding the Fourth Proportional to 8,940.20, 12,339.24 and 5,165.82

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Solution

The fourth proportional to 8,940.20, 12,339.24 and 5,165.82 is: 7,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.20 : 12,339.24 = 5,165.82 : x
  2. Step 2: Convert to fraction form
    8,940.20/12,339.24 = 5,165.82/x
  3. Step 3: Cross multiply
    8,940.20x = 12,339.24 × 5,165.82
  4. Step 4: Simplify right side
    8,940.20x = 63,742,292.78
  5. Step 5: Solve for x
    x = 63,742,292.78/8,940.20
  6. Step 6: Final answer
    x = 7,129.85

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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.