Home / 5,545.49-7,639.79-3,863.86

Finding the Fourth Proportional to 5,545.49, 7,639.79 and 3,863.86

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Solution

The fourth proportional to 5,545.49, 7,639.79 and 3,863.86 is: 5,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,545.49 : 7,639.79 = 3,863.86 : x
  2. Step 2: Convert to fraction form
    5,545.49/7,639.79 = 3,863.86/x
  3. Step 3: Cross multiply
    5,545.49x = 7,639.79 × 3,863.86
  4. Step 4: Simplify right side
    5,545.49x = 29,519,040.57
  5. Step 5: Solve for x
    x = 29,519,040.57/5,545.49
  6. Step 6: Final answer
    x = 5,323.08

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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.