Home / 3,391.47-5,087.15-926.29

Finding the Fourth Proportional to 3,391.47, 5,087.15 and 926.29

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Solution

The fourth proportional to 3,391.47, 5,087.15 and 926.29 is: 1,389.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.47 : 5,087.15 = 926.29 : x
  2. Step 2: Convert to fraction form
    3,391.47/5,087.15 = 926.29/x
  3. Step 3: Cross multiply
    3,391.47x = 5,087.15 × 926.29
  4. Step 4: Simplify right side
    3,391.47x = 4,712,157.97
  5. Step 5: Solve for x
    x = 4,712,157.97/3,391.47
  6. Step 6: Final answer
    x = 1,389.41

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1.5x scale

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.