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Finding the Fourth Proportional to 10,391.97, 15,587.86 and 2,600.79

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Solution

The fourth proportional to 10,391.97, 15,587.86 and 2,600.79 is: 3,901.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.97 : 15,587.86 = 2,600.79 : x
  2. Step 2: Convert to fraction form
    10,391.97/15,587.86 = 2,600.79/x
  3. Step 3: Cross multiply
    10,391.97x = 15,587.86 × 2,600.79
  4. Step 4: Simplify right side
    10,391.97x = 40,540,750.41
  5. Step 5: Solve for x
    x = 40,540,750.41/10,391.97
  6. Step 6: Final answer
    x = 3,901.16

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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.