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Finding the Fourth Proportional to 5,393.01, 8,079.15 and 3,888.78

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Solution

The fourth proportional to 5,393.01, 8,079.15 and 3,888.78 is: 5,825.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.01 : 8,079.15 = 3,888.78 : x
  2. Step 2: Convert to fraction form
    5,393.01/8,079.15 = 3,888.78/x
  3. Step 3: Cross multiply
    5,393.01x = 8,079.15 × 3,888.78
  4. Step 4: Simplify right side
    5,393.01x = 31,418,021.22
  5. Step 5: Solve for x
    x = 31,418,021.22/5,393.01
  6. Step 6: Final answer
    x = 5,825.69

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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.