Home / 3,630.60-5,012.63-2,789.78

Finding the Fourth Proportional to 3,630.60, 5,012.63 and 2,789.78

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Solution

The fourth proportional to 3,630.60, 5,012.63 and 2,789.78 is: 3,851.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.60 : 5,012.63 = 2,789.78 : x
  2. Step 2: Convert to fraction form
    3,630.60/5,012.63 = 2,789.78/x
  3. Step 3: Cross multiply
    3,630.60x = 5,012.63 × 2,789.78
  4. Step 4: Simplify right side
    3,630.60x = 13,984,095.91
  5. Step 5: Solve for x
    x = 13,984,095.91/3,630.60
  6. Step 6: Final answer
    x = 3,851.73

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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.