Home / 1,140.81-1,712.43-926.97

Finding the Fourth Proportional to 1,140.81, 1,712.43 and 926.97

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Solution

The fourth proportional to 1,140.81, 1,712.43 and 926.97 is: 1,391.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.81 : 1,712.43 = 926.97 : x
  2. Step 2: Convert to fraction form
    1,140.81/1,712.43 = 926.97/x
  3. Step 3: Cross multiply
    1,140.81x = 1,712.43 × 926.97
  4. Step 4: Simplify right side
    1,140.81x = 1,587,371.24
  5. Step 5: Solve for x
    x = 1,587,371.24/1,140.81
  6. Step 6: Final answer
    x = 1,391.44

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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.