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Finding the Fourth Proportional to 5,393.40, 7,442.28 and 3,002.82

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Solution

The fourth proportional to 5,393.40, 7,442.28 and 3,002.82 is: 4,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.40 : 7,442.28 = 3,002.82 : x
  2. Step 2: Convert to fraction form
    5,393.40/7,442.28 = 3,002.82/x
  3. Step 3: Cross multiply
    5,393.40x = 7,442.28 × 3,002.82
  4. Step 4: Simplify right side
    5,393.40x = 22,347,827.23
  5. Step 5: Solve for x
    x = 22,347,827.23/5,393.40
  6. Step 6: Final answer
    x = 4,143.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.