Home / 8,139.29-12,200.63-3,206.93

Finding the Fourth Proportional to 8,139.29, 12,200.63 and 3,206.93

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Solution

The fourth proportional to 8,139.29, 12,200.63 and 3,206.93 is: 4,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.29 : 12,200.63 = 3,206.93 : x
  2. Step 2: Convert to fraction form
    8,139.29/12,200.63 = 3,206.93/x
  3. Step 3: Cross multiply
    8,139.29x = 12,200.63 × 3,206.93
  4. Step 4: Simplify right side
    8,139.29x = 39,126,489.33
  5. Step 5: Solve for x
    x = 39,126,489.33/8,139.29
  6. Step 6: Final answer
    x = 4,807.12

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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.