Home / 5,123.26-7,685.04-1,425.76

Finding the Fourth Proportional to 5,123.26, 7,685.04 and 1,425.76

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Solution

The fourth proportional to 5,123.26, 7,685.04 and 1,425.76 is: 2,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.26 : 7,685.04 = 1,425.76 : x
  2. Step 2: Convert to fraction form
    5,123.26/7,685.04 = 1,425.76/x
  3. Step 3: Cross multiply
    5,123.26x = 7,685.04 × 1,425.76
  4. Step 4: Simplify right side
    5,123.26x = 10,957,022.63
  5. Step 5: Solve for x
    x = 10,957,022.63/5,123.26
  6. Step 6: Final answer
    x = 2,138.68

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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.