Home / 5,380.84-8,053.90-2,780.20

Finding the Fourth Proportional to 5,380.84, 8,053.90 and 2,780.20

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Solution

The fourth proportional to 5,380.84, 8,053.90 and 2,780.20 is: 4,161.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.84 : 8,053.90 = 2,780.20 : x
  2. Step 2: Convert to fraction form
    5,380.84/8,053.90 = 2,780.20/x
  3. Step 3: Cross multiply
    5,380.84x = 8,053.90 × 2,780.20
  4. Step 4: Simplify right side
    5,380.84x = 22,391,452.78
  5. Step 5: Solve for x
    x = 22,391,452.78/5,380.84
  6. Step 6: Final answer
    x = 4,161.33

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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.