Home / 5,381.10-7,423.71-3,390.54

Finding the Fourth Proportional to 5,381.10, 7,423.71 and 3,390.54

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Solution

The fourth proportional to 5,381.10, 7,423.71 and 3,390.54 is: 4,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.10 : 7,423.71 = 3,390.54 : x
  2. Step 2: Convert to fraction form
    5,381.10/7,423.71 = 3,390.54/x
  3. Step 3: Cross multiply
    5,381.10x = 7,423.71 × 3,390.54
  4. Step 4: Simplify right side
    5,381.10x = 25,170,385.70
  5. Step 5: Solve for x
    x = 25,170,385.70/5,381.10
  6. Step 6: Final answer
    x = 4,677.55

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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.