Home / 1,821.40-2,728.32-1,512.52

Finding the Fourth Proportional to 1,821.40, 2,728.32 and 1,512.52

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Solution

The fourth proportional to 1,821.40, 2,728.32 and 1,512.52 is: 2,265.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.40 : 2,728.32 = 1,512.52 : x
  2. Step 2: Convert to fraction form
    1,821.40/2,728.32 = 1,512.52/x
  3. Step 3: Cross multiply
    1,821.40x = 2,728.32 × 1,512.52
  4. Step 4: Simplify right side
    1,821.40x = 4,126,638.57
  5. Step 5: Solve for x
    x = 4,126,638.57/1,821.40
  6. Step 6: Final answer
    x = 2,265.64

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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.