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Finding the Fourth Proportional to 5,541.21, 8,251.47 and 5,479.85

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Solution

The fourth proportional to 5,541.21, 8,251.47 and 5,479.85 is: 8,160.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,541.21 : 8,251.47 = 5,479.85 : x
  2. Step 2: Convert to fraction form
    5,541.21/8,251.47 = 5,479.85/x
  3. Step 3: Cross multiply
    5,541.21x = 8,251.47 × 5,479.85
  4. Step 4: Simplify right side
    5,541.21x = 45,216,838.51
  5. Step 5: Solve for x
    x = 45,216,838.51/5,541.21
  6. Step 6: Final answer
    x = 8,160.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.