Home / 5,711.78-8,551.25-4,220.97

Finding the Fourth Proportional to 5,711.78, 8,551.25 and 4,220.97

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Solution

The fourth proportional to 5,711.78, 8,551.25 and 4,220.97 is: 6,319.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.78 : 8,551.25 = 4,220.97 : x
  2. Step 2: Convert to fraction form
    5,711.78/8,551.25 = 4,220.97/x
  3. Step 3: Cross multiply
    5,711.78x = 8,551.25 × 4,220.97
  4. Step 4: Simplify right side
    5,711.78x = 36,094,569.71
  5. Step 5: Solve for x
    x = 36,094,569.71/5,711.78
  6. Step 6: Final answer
    x = 6,319.33

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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.