Home / 9,117.30-12,577.05-6,279.79

Finding the Fourth Proportional to 9,117.30, 12,577.05 and 6,279.79

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Solution

The fourth proportional to 9,117.30, 12,577.05 and 6,279.79 is: 8,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.30 : 12,577.05 = 6,279.79 : x
  2. Step 2: Convert to fraction form
    9,117.30/12,577.05 = 6,279.79/x
  3. Step 3: Cross multiply
    9,117.30x = 12,577.05 × 6,279.79
  4. Step 4: Simplify right side
    9,117.30x = 78,981,264.26
  5. Step 5: Solve for x
    x = 78,981,264.26/9,117.30
  6. Step 6: Final answer
    x = 8,662.79

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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.