Home / 5,164.20-7,124.40-3,174.12

Finding the Fourth Proportional to 5,164.20, 7,124.40 and 3,174.12

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Solution

The fourth proportional to 5,164.20, 7,124.40 and 3,174.12 is: 4,378.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.20 : 7,124.40 = 3,174.12 : x
  2. Step 2: Convert to fraction form
    5,164.20/7,124.40 = 3,174.12/x
  3. Step 3: Cross multiply
    5,164.20x = 7,124.40 × 3,174.12
  4. Step 4: Simplify right side
    5,164.20x = 22,613,700.53
  5. Step 5: Solve for x
    x = 22,613,700.53/5,164.20
  6. Step 6: Final answer
    x = 4,378.94

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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.