Home / 8,712.24-12,023.16-4,987.44

Finding the Fourth Proportional to 8,712.24, 12,023.16 and 4,987.44

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Solution

The fourth proportional to 8,712.24, 12,023.16 and 4,987.44 is: 6,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.24 : 12,023.16 = 4,987.44 : x
  2. Step 2: Convert to fraction form
    8,712.24/12,023.16 = 4,987.44/x
  3. Step 3: Cross multiply
    8,712.24x = 12,023.16 × 4,987.44
  4. Step 4: Simplify right side
    8,712.24x = 59,964,789.11
  5. Step 5: Solve for x
    x = 59,964,789.11/8,712.24
  6. Step 6: Final answer
    x = 6,882.82

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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.