Home / 7,381.52-10,170.60-5,390

Finding the Fourth Proportional to 7,381.52, 10,170.60 and 5,390

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Solution

The fourth proportional to 7,381.52, 10,170.60 and 5,390 is: 7,426.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.52 : 10,170.60 = 5,390 : x
  2. Step 2: Convert to fraction form
    7,381.52/10,170.60 = 5,390/x
  3. Step 3: Cross multiply
    7,381.52x = 10,170.60 × 5,390
  4. Step 4: Simplify right side
    7,381.52x = 54,819,534
  5. Step 5: Solve for x
    x = 54,819,534/7,381.52
  6. Step 6: Final answer
    x = 7,426.59

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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.