Home / 2,780.28-4,167.18-1,479.42

Finding the Fourth Proportional to 2,780.28, 4,167.18 and 1,479.42

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Solution

The fourth proportional to 2,780.28, 4,167.18 and 1,479.42 is: 2,217.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.28 : 4,167.18 = 1,479.42 : x
  2. Step 2: Convert to fraction form
    2,780.28/4,167.18 = 1,479.42/x
  3. Step 3: Cross multiply
    2,780.28x = 4,167.18 × 1,479.42
  4. Step 4: Simplify right side
    2,780.28x = 6,165,009.44
  5. Step 5: Solve for x
    x = 6,165,009.44/2,780.28
  6. Step 6: Final answer
    x = 2,217.41

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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.