Home / 1,260.91-1,887.49-1,142.11

Finding the Fourth Proportional to 1,260.91, 1,887.49 and 1,142.11

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Solution

The fourth proportional to 1,260.91, 1,887.49 and 1,142.11 is: 1,709.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.91 : 1,887.49 = 1,142.11 : x
  2. Step 2: Convert to fraction form
    1,260.91/1,887.49 = 1,142.11/x
  3. Step 3: Cross multiply
    1,260.91x = 1,887.49 × 1,142.11
  4. Step 4: Simplify right side
    1,260.91x = 2,155,721.20
  5. Step 5: Solve for x
    x = 2,155,721.20/1,260.91
  6. Step 6: Final answer
    x = 1,709.66

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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.