Home / 4,641.20-6,404.87-2,778.20

Finding the Fourth Proportional to 4,641.20, 6,404.87 and 2,778.20

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Solution

The fourth proportional to 4,641.20, 6,404.87 and 2,778.20 is: 3,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,641.20 : 6,404.87 = 2,778.20 : x
  2. Step 2: Convert to fraction form
    4,641.20/6,404.87 = 2,778.20/x
  3. Step 3: Cross multiply
    4,641.20x = 6,404.87 × 2,778.20
  4. Step 4: Simplify right side
    4,641.20x = 17,793,963.92
  5. Step 5: Solve for x
    x = 17,793,963.92/4,641.20
  6. Step 6: Final answer
    x = 3,833.92

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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.