Home / 2,132.09-2,942.23-1,187.88

Finding the Fourth Proportional to 2,132.09, 2,942.23 and 1,187.88

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Solution

The fourth proportional to 2,132.09, 2,942.23 and 1,187.88 is: 1,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.09 : 2,942.23 = 1,187.88 : x
  2. Step 2: Convert to fraction form
    2,132.09/2,942.23 = 1,187.88/x
  3. Step 3: Cross multiply
    2,132.09x = 2,942.23 × 1,187.88
  4. Step 4: Simplify right side
    2,132.09x = 3,495,001.46
  5. Step 5: Solve for x
    x = 3,495,001.46/2,132.09
  6. Step 6: Final answer
    x = 1,639.24

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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.