Home / 2,132.23-2,942.38-1,187.97

Finding the Fourth Proportional to 2,132.23, 2,942.38 and 1,187.97

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Solution

The fourth proportional to 2,132.23, 2,942.38 and 1,187.97 is: 1,639.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.23 : 2,942.38 = 1,187.97 : x
  2. Step 2: Convert to fraction form
    2,132.23/2,942.38 = 1,187.97/x
  3. Step 3: Cross multiply
    2,132.23x = 2,942.38 × 1,187.97
  4. Step 4: Simplify right side
    2,132.23x = 3,495,459.17
  5. Step 5: Solve for x
    x = 3,495,459.17/2,132.23
  6. Step 6: Final answer
    x = 1,639.34

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1.5x scale

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.