Home / 8,715.28-13,074.75-2,872.35

Finding the Fourth Proportional to 8,715.28, 13,074.75 and 2,872.35

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Solution

The fourth proportional to 8,715.28, 13,074.75 and 2,872.35 is: 4,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.28 : 13,074.75 = 2,872.35 : x
  2. Step 2: Convert to fraction form
    8,715.28/13,074.75 = 2,872.35/x
  3. Step 3: Cross multiply
    8,715.28x = 13,074.75 × 2,872.35
  4. Step 4: Simplify right side
    8,715.28x = 37,555,258.16
  5. Step 5: Solve for x
    x = 37,555,258.16/8,715.28
  6. Step 6: Final answer
    x = 4,309.13

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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.