Home / 8,921.15-13,381.68-2,257.71

Finding the Fourth Proportional to 8,921.15, 13,381.68 and 2,257.71

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Solution

The fourth proportional to 8,921.15, 13,381.68 and 2,257.71 is: 3,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.15 : 13,381.68 = 2,257.71 : x
  2. Step 2: Convert to fraction form
    8,921.15/13,381.68 = 2,257.71/x
  3. Step 3: Cross multiply
    8,921.15x = 13,381.68 × 2,257.71
  4. Step 4: Simplify right side
    8,921.15x = 30,211,961.22
  5. Step 5: Solve for x
    x = 30,211,961.22/8,921.15
  6. Step 6: Final answer
    x = 3,386.56

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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.