Home / 8,159.07-11,247.12-6,387.60

Finding the Fourth Proportional to 8,159.07, 11,247.12 and 6,387.60

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Solution

The fourth proportional to 8,159.07, 11,247.12 and 6,387.60 is: 8,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.07 : 11,247.12 = 6,387.60 : x
  2. Step 2: Convert to fraction form
    8,159.07/11,247.12 = 6,387.60/x
  3. Step 3: Cross multiply
    8,159.07x = 11,247.12 × 6,387.60
  4. Step 4: Simplify right side
    8,159.07x = 71,842,103.71
  5. Step 5: Solve for x
    x = 71,842,103.71/8,159.07
  6. Step 6: Final answer
    x = 8,805.18

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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.