Home / 8,125.28-11,201.76-5,139.62

Finding the Fourth Proportional to 8,125.28, 11,201.76 and 5,139.62

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Solution

The fourth proportional to 8,125.28, 11,201.76 and 5,139.62 is: 7,085.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.28 : 11,201.76 = 5,139.62 : x
  2. Step 2: Convert to fraction form
    8,125.28/11,201.76 = 5,139.62/x
  3. Step 3: Cross multiply
    8,125.28x = 11,201.76 × 5,139.62
  4. Step 4: Simplify right side
    8,125.28x = 57,572,733.72
  5. Step 5: Solve for x
    x = 57,572,733.72/8,125.28
  6. Step 6: Final answer
    x = 7,085.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.