Home / 2,512.60-3,765.80-1,821.64

Finding the Fourth Proportional to 2,512.60, 3,765.80 and 1,821.64

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Solution

The fourth proportional to 2,512.60, 3,765.80 and 1,821.64 is: 2,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.60 : 3,765.80 = 1,821.64 : x
  2. Step 2: Convert to fraction form
    2,512.60/3,765.80 = 1,821.64/x
  3. Step 3: Cross multiply
    2,512.60x = 3,765.80 × 1,821.64
  4. Step 4: Simplify right side
    2,512.60x = 6,859,931.91
  5. Step 5: Solve for x
    x = 6,859,931.91/2,512.60
  6. Step 6: Final answer
    x = 2,730.21

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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.