Home / 1,308.98-1,972.47-1,082.96

Finding the Fourth Proportional to 1,308.98, 1,972.47 and 1,082.96

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Solution

The fourth proportional to 1,308.98, 1,972.47 and 1,082.96 is: 1,631.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.98 : 1,972.47 = 1,082.96 : x
  2. Step 2: Convert to fraction form
    1,308.98/1,972.47 = 1,082.96/x
  3. Step 3: Cross multiply
    1,308.98x = 1,972.47 × 1,082.96
  4. Step 4: Simplify right side
    1,308.98x = 2,136,096.25
  5. Step 5: Solve for x
    x = 2,136,096.25/1,308.98
  6. Step 6: Final answer
    x = 1,631.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.