Home / 8,631.88-12,948.09-2,391.95

Finding the Fourth Proportional to 8,631.88, 12,948.09 and 2,391.95

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Solution

The fourth proportional to 8,631.88, 12,948.09 and 2,391.95 is: 3,587.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.88 : 12,948.09 = 2,391.95 : x
  2. Step 2: Convert to fraction form
    8,631.88/12,948.09 = 2,391.95/x
  3. Step 3: Cross multiply
    8,631.88x = 12,948.09 × 2,391.95
  4. Step 4: Simplify right side
    8,631.88x = 30,971,119.14
  5. Step 5: Solve for x
    x = 30,971,119.14/8,631.88
  6. Step 6: Final answer
    x = 3,587.99

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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.