Home / 5,640.68-8,436.18-5,123.96

Finding the Fourth Proportional to 5,640.68, 8,436.18 and 5,123.96

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Solution

The fourth proportional to 5,640.68, 8,436.18 and 5,123.96 is: 7,663.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.68 : 8,436.18 = 5,123.96 : x
  2. Step 2: Convert to fraction form
    5,640.68/8,436.18 = 5,123.96/x
  3. Step 3: Cross multiply
    5,640.68x = 8,436.18 × 5,123.96
  4. Step 4: Simplify right side
    5,640.68x = 43,226,648.87
  5. Step 5: Solve for x
    x = 43,226,648.87/5,640.68
  6. Step 6: Final answer
    x = 7,663.38

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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.