Home / 8,139.90-12,211.69-2,593.56

Finding the Fourth Proportional to 8,139.90, 12,211.69 and 2,593.56

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Solution

The fourth proportional to 8,139.90, 12,211.69 and 2,593.56 is: 3,890.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.90 : 12,211.69 = 2,593.56 : x
  2. Step 2: Convert to fraction form
    8,139.90/12,211.69 = 2,593.56/x
  3. Step 3: Cross multiply
    8,139.90x = 12,211.69 × 2,593.56
  4. Step 4: Simplify right side
    8,139.90x = 31,671,750.72
  5. Step 5: Solve for x
    x = 31,671,750.72/8,139.90
  6. Step 6: Final answer
    x = 3,890.93

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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.