Home / 1,876.31-2,588.53-1,129.90

Finding the Fourth Proportional to 1,876.31, 2,588.53 and 1,129.90

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Solution

The fourth proportional to 1,876.31, 2,588.53 and 1,129.90 is: 1,558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.31 : 2,588.53 = 1,129.90 : x
  2. Step 2: Convert to fraction form
    1,876.31/2,588.53 = 1,129.90/x
  3. Step 3: Cross multiply
    1,876.31x = 2,588.53 × 1,129.90
  4. Step 4: Simplify right side
    1,876.31x = 2,924,761.45
  5. Step 5: Solve for x
    x = 2,924,761.45/1,876.31
  6. Step 6: Final answer
    x = 1,558.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.