Home / 5,129.80-7,074.66-4,134.76

Finding the Fourth Proportional to 5,129.80, 7,074.66 and 4,134.76

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Solution

The fourth proportional to 5,129.80, 7,074.66 and 4,134.76 is: 5,702.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.80 : 7,074.66 = 4,134.76 : x
  2. Step 2: Convert to fraction form
    5,129.80/7,074.66 = 4,134.76/x
  3. Step 3: Cross multiply
    5,129.80x = 7,074.66 × 4,134.76
  4. Step 4: Simplify right side
    5,129.80x = 29,252,021.18
  5. Step 5: Solve for x
    x = 29,252,021.18/5,129.80
  6. Step 6: Final answer
    x = 5,702.37

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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.