Home / 5,353.55-7,389.39-3,115.86

Finding the Fourth Proportional to 5,353.55, 7,389.39 and 3,115.86

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Solution

The fourth proportional to 5,353.55, 7,389.39 and 3,115.86 is: 4,300.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,353.55 : 7,389.39 = 3,115.86 : x
  2. Step 2: Convert to fraction form
    5,353.55/7,389.39 = 3,115.86/x
  3. Step 3: Cross multiply
    5,353.55x = 7,389.39 × 3,115.86
  4. Step 4: Simplify right side
    5,353.55x = 23,024,304.73
  5. Step 5: Solve for x
    x = 23,024,304.73/5,353.55
  6. Step 6: Final answer
    x = 4,300.75

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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.