Home / 8,863.28-12,230.90-5,085.72

Finding the Fourth Proportional to 8,863.28, 12,230.90 and 5,085.72

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Solution

The fourth proportional to 8,863.28, 12,230.90 and 5,085.72 is: 7,018.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.28 : 12,230.90 = 5,085.72 : x
  2. Step 2: Convert to fraction form
    8,863.28/12,230.90 = 5,085.72/x
  3. Step 3: Cross multiply
    8,863.28x = 12,230.90 × 5,085.72
  4. Step 4: Simplify right side
    8,863.28x = 62,202,932.75
  5. Step 5: Solve for x
    x = 62,202,932.75/8,863.28
  6. Step 6: Final answer
    x = 7,018.05

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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.