Home / 8,279.25-12,418.88-2,123.25

Finding the Fourth Proportional to 8,279.25, 12,418.88 and 2,123.25

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Solution

The fourth proportional to 8,279.25, 12,418.88 and 2,123.25 is: 3,184.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.25 : 12,418.88 = 2,123.25 : x
  2. Step 2: Convert to fraction form
    8,279.25/12,418.88 = 2,123.25/x
  3. Step 3: Cross multiply
    8,279.25x = 12,418.88 × 2,123.25
  4. Step 4: Simplify right side
    8,279.25x = 26,368,376.34
  5. Step 5: Solve for x
    x = 26,368,376.34/8,279.25
  6. Step 6: Final answer
    x = 3,184.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.