Home / 3,117.60-4,666.20-2,829.78

Finding the Fourth Proportional to 3,117.60, 4,666.20 and 2,829.78

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Solution

The fourth proportional to 3,117.60, 4,666.20 and 2,829.78 is: 4,235.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.60 : 4,666.20 = 2,829.78 : x
  2. Step 2: Convert to fraction form
    3,117.60/4,666.20 = 2,829.78/x
  3. Step 3: Cross multiply
    3,117.60x = 4,666.20 × 2,829.78
  4. Step 4: Simplify right side
    3,117.60x = 13,204,319.44
  5. Step 5: Solve for x
    x = 13,204,319.44/3,117.60
  6. Step 6: Final answer
    x = 4,235.41

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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.