Home / 8,634.24-12,939.84-6,425.28

Finding the Fourth Proportional to 8,634.24, 12,939.84 and 6,425.28

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Solution

The fourth proportional to 8,634.24, 12,939.84 and 6,425.28 is: 9,629.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.24 : 12,939.84 = 6,425.28 : x
  2. Step 2: Convert to fraction form
    8,634.24/12,939.84 = 6,425.28/x
  3. Step 3: Cross multiply
    8,634.24x = 12,939.84 × 6,425.28
  4. Step 4: Simplify right side
    8,634.24x = 83,142,095.16
  5. Step 5: Solve for x
    x = 83,142,095.16/8,634.24
  6. Step 6: Final answer
    x = 9,629.35

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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.