Home / 2,132.02-2,942.17-1,187.80

Finding the Fourth Proportional to 2,132.02, 2,942.17 and 1,187.80

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Solution

The fourth proportional to 2,132.02, 2,942.17 and 1,187.80 is: 1,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.02 : 2,942.17 = 1,187.80 : x
  2. Step 2: Convert to fraction form
    2,132.02/2,942.17 = 1,187.80/x
  3. Step 3: Cross multiply
    2,132.02x = 2,942.17 × 1,187.80
  4. Step 4: Simplify right side
    2,132.02x = 3,494,709.53
  5. Step 5: Solve for x
    x = 3,494,709.53/2,132.02
  6. Step 6: Final answer
    x = 1,639.15

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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.