Home / 8,717.07-12,031.31-5,179.60

Finding the Fourth Proportional to 8,717.07, 12,031.31 and 5,179.60

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Solution

The fourth proportional to 8,717.07, 12,031.31 and 5,179.60 is: 7,148.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.07 : 12,031.31 = 5,179.60 : x
  2. Step 2: Convert to fraction form
    8,717.07/12,031.31 = 5,179.60/x
  3. Step 3: Cross multiply
    8,717.07x = 12,031.31 × 5,179.60
  4. Step 4: Simplify right side
    8,717.07x = 62,317,317.30
  5. Step 5: Solve for x
    x = 62,317,317.30/8,717.07
  6. Step 6: Final answer
    x = 7,148.88

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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.