Home / 5,218.62-7,820.61-2,438.70

Finding the Fourth Proportional to 5,218.62, 7,820.61 and 2,438.70

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Solution

The fourth proportional to 5,218.62, 7,820.61 and 2,438.70 is: 3,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.62 : 7,820.61 = 2,438.70 : x
  2. Step 2: Convert to fraction form
    5,218.62/7,820.61 = 2,438.70/x
  3. Step 3: Cross multiply
    5,218.62x = 7,820.61 × 2,438.70
  4. Step 4: Simplify right side
    5,218.62x = 19,072,121.61
  5. Step 5: Solve for x
    x = 19,072,121.61/5,218.62
  6. Step 6: Final answer
    x = 3,654.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.