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Finding the Fourth Proportional to 1,877.16, 2,808.72 and 1,330.68

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Solution

The fourth proportional to 1,877.16, 2,808.72 and 1,330.68 is: 1,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.16 : 2,808.72 = 1,330.68 : x
  2. Step 2: Convert to fraction form
    1,877.16/2,808.72 = 1,330.68/x
  3. Step 3: Cross multiply
    1,877.16x = 2,808.72 × 1,330.68
  4. Step 4: Simplify right side
    1,877.16x = 3,737,507.53
  5. Step 5: Solve for x
    x = 3,737,507.53/1,877.16
  6. Step 6: Final answer
    x = 1,991.04

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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.