Home / 1,480.17-2,220.55-931.70

Finding the Fourth Proportional to 1,480.17, 2,220.55 and 931.70

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Solution

The fourth proportional to 1,480.17, 2,220.55 and 931.70 is: 1,397.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.17 : 2,220.55 = 931.70 : x
  2. Step 2: Convert to fraction form
    1,480.17/2,220.55 = 931.70/x
  3. Step 3: Cross multiply
    1,480.17x = 2,220.55 × 931.70
  4. Step 4: Simplify right side
    1,480.17x = 2,068,889.66
  5. Step 5: Solve for x
    x = 2,068,889.66/1,480.17
  6. Step 6: Final answer
    x = 1,397.73

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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.