Home / 5,123.92-7,685.61-1,426.36

Finding the Fourth Proportional to 5,123.92, 7,685.61 and 1,426.36

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Solution

The fourth proportional to 5,123.92, 7,685.61 and 1,426.36 is: 2,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.92 : 7,685.61 = 1,426.36 : x
  2. Step 2: Convert to fraction form
    5,123.92/7,685.61 = 1,426.36/x
  3. Step 3: Cross multiply
    5,123.92x = 7,685.61 × 1,426.36
  4. Step 4: Simplify right side
    5,123.92x = 10,962,446.68
  5. Step 5: Solve for x
    x = 10,962,446.68/5,123.92
  6. Step 6: Final answer
    x = 2,139.46

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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.