Home / 8,972.75-12,385.19-6,139.06

Finding the Fourth Proportional to 8,972.75, 12,385.19 and 6,139.06

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Solution

The fourth proportional to 8,972.75, 12,385.19 and 6,139.06 is: 8,473.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.75 : 12,385.19 = 6,139.06 : x
  2. Step 2: Convert to fraction form
    8,972.75/12,385.19 = 6,139.06/x
  3. Step 3: Cross multiply
    8,972.75x = 12,385.19 × 6,139.06
  4. Step 4: Simplify right side
    8,972.75x = 76,033,408.91
  5. Step 5: Solve for x
    x = 76,033,408.91/8,972.75
  6. Step 6: Final answer
    x = 8,473.81

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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.