Home / 5,147.08-7,102.92-2,789.18

Finding the Fourth Proportional to 5,147.08, 7,102.92 and 2,789.18

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Solution

The fourth proportional to 5,147.08, 7,102.92 and 2,789.18 is: 3,849.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.08 : 7,102.92 = 2,789.18 : x
  2. Step 2: Convert to fraction form
    5,147.08/7,102.92 = 2,789.18/x
  3. Step 3: Cross multiply
    5,147.08x = 7,102.92 × 2,789.18
  4. Step 4: Simplify right side
    5,147.08x = 19,811,322.41
  5. Step 5: Solve for x
    x = 19,811,322.41/5,147.08
  6. Step 6: Final answer
    x = 3,849.04

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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.