Home / 8,139.03-12,209.44-2,591.07

Finding the Fourth Proportional to 8,139.03, 12,209.44 and 2,591.07

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Solution

The fourth proportional to 8,139.03, 12,209.44 and 2,591.07 is: 3,886.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.03 : 12,209.44 = 2,591.07 : x
  2. Step 2: Convert to fraction form
    8,139.03/12,209.44 = 2,591.07/x
  3. Step 3: Cross multiply
    8,139.03x = 12,209.44 × 2,591.07
  4. Step 4: Simplify right side
    8,139.03x = 31,635,513.70
  5. Step 5: Solve for x
    x = 31,635,513.70/8,139.03
  6. Step 6: Final answer
    x = 3,886.89

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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.