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Finding the Fourth Proportional to 5,391.45, 8,079.28 and 3,834.45

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Solution

The fourth proportional to 5,391.45, 8,079.28 and 3,834.45 is: 5,746.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.45 : 8,079.28 = 3,834.45 : x
  2. Step 2: Convert to fraction form
    5,391.45/8,079.28 = 3,834.45/x
  3. Step 3: Cross multiply
    5,391.45x = 8,079.28 × 3,834.45
  4. Step 4: Simplify right side
    5,391.45x = 30,979,585.61
  5. Step 5: Solve for x
    x = 30,979,585.61/5,391.45
  6. Step 6: Final answer
    x = 5,746.06

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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.