Home / 5,391.32-7,440.12-3,154.80

Finding the Fourth Proportional to 5,391.32, 7,440.12 and 3,154.80

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Solution

The fourth proportional to 5,391.32, 7,440.12 and 3,154.80 is: 4,353.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.32 : 7,440.12 = 3,154.80 : x
  2. Step 2: Convert to fraction form
    5,391.32/7,440.12 = 3,154.80/x
  3. Step 3: Cross multiply
    5,391.32x = 7,440.12 × 3,154.80
  4. Step 4: Simplify right side
    5,391.32x = 23,472,090.58
  5. Step 5: Solve for x
    x = 23,472,090.58/5,391.32
  6. Step 6: Final answer
    x = 4,353.68

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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.