Home / 5,480.19-8,220.78-1,781.46

Finding the Fourth Proportional to 5,480.19, 8,220.78 and 1,781.46

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Solution

The fourth proportional to 5,480.19, 8,220.78 and 1,781.46 is: 2,672.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.19 : 8,220.78 = 1,781.46 : x
  2. Step 2: Convert to fraction form
    5,480.19/8,220.78 = 1,781.46/x
  3. Step 3: Cross multiply
    5,480.19x = 8,220.78 × 1,781.46
  4. Step 4: Simplify right side
    5,480.19x = 14,644,990.74
  5. Step 5: Solve for x
    x = 14,644,990.74/5,480.19
  6. Step 6: Final answer
    x = 2,672.35

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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.