Home / 8,140.28-12,209.74-2,593.40

Finding the Fourth Proportional to 8,140.28, 12,209.74 and 2,593.40

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Solution

The fourth proportional to 8,140.28, 12,209.74 and 2,593.40 is: 3,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.28 : 12,209.74 = 2,593.40 : x
  2. Step 2: Convert to fraction form
    8,140.28/12,209.74 = 2,593.40/x
  3. Step 3: Cross multiply
    8,140.28x = 12,209.74 × 2,593.40
  4. Step 4: Simplify right side
    8,140.28x = 31,664,739.72
  5. Step 5: Solve for x
    x = 31,664,739.72/8,140.28
  6. Step 6: Final answer
    x = 3,889.88

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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.