Home / 2,841.60-3,921.36-1,662.72

Finding the Fourth Proportional to 2,841.60, 3,921.36 and 1,662.72

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Solution

The fourth proportional to 2,841.60, 3,921.36 and 1,662.72 is: 2,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.60 : 3,921.36 = 1,662.72 : x
  2. Step 2: Convert to fraction form
    2,841.60/3,921.36 = 1,662.72/x
  3. Step 3: Cross multiply
    2,841.60x = 3,921.36 × 1,662.72
  4. Step 4: Simplify right side
    2,841.60x = 6,520,123.70
  5. Step 5: Solve for x
    x = 6,520,123.70/2,841.60
  6. Step 6: Final answer
    x = 2,294.53

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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.