Home / 5,147.04-7,102.92-2,789.20

Finding the Fourth Proportional to 5,147.04, 7,102.92 and 2,789.20

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Solution

The fourth proportional to 5,147.04, 7,102.92 and 2,789.20 is: 3,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.04 : 7,102.92 = 2,789.20 : x
  2. Step 2: Convert to fraction form
    5,147.04/7,102.92 = 2,789.20/x
  3. Step 3: Cross multiply
    5,147.04x = 7,102.92 × 2,789.20
  4. Step 4: Simplify right side
    5,147.04x = 19,811,483.80
  5. Step 5: Solve for x
    x = 19,811,483.80/5,147.04
  6. Step 6: Final answer
    x = 3,849.10

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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.