Home / 1,397.18-2,096.22-666.66

Finding the Fourth Proportional to 1,397.18, 2,096.22 and 666.66

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Solution

The fourth proportional to 1,397.18, 2,096.22 and 666.66 is: 1,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.18 : 2,096.22 = 666.66 : x
  2. Step 2: Convert to fraction form
    1,397.18/2,096.22 = 666.66/x
  3. Step 3: Cross multiply
    1,397.18x = 2,096.22 × 666.66
  4. Step 4: Simplify right side
    1,397.18x = 1,397,452.21
  5. Step 5: Solve for x
    x = 1,397,452.21/1,397.18
  6. Step 6: Final answer
    x = 1,000.20

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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.