Home / 5,138.18-7,707.15-2,945.30

Finding the Fourth Proportional to 5,138.18, 7,707.15 and 2,945.30

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Solution

The fourth proportional to 5,138.18, 7,707.15 and 2,945.30 is: 4,417.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.18 : 7,707.15 = 2,945.30 : x
  2. Step 2: Convert to fraction form
    5,138.18/7,707.15 = 2,945.30/x
  3. Step 3: Cross multiply
    5,138.18x = 7,707.15 × 2,945.30
  4. Step 4: Simplify right side
    5,138.18x = 22,699,868.90
  5. Step 5: Solve for x
    x = 22,699,868.90/5,138.18
  6. Step 6: Final answer
    x = 4,417.88

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1.5x scale

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.