Home / 2,043.90-2,821.20-1,520.64

Finding the Fourth Proportional to 2,043.90, 2,821.20 and 1,520.64

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Solution

The fourth proportional to 2,043.90, 2,821.20 and 1,520.64 is: 2,098.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.90 : 2,821.20 = 1,520.64 : x
  2. Step 2: Convert to fraction form
    2,043.90/2,821.20 = 1,520.64/x
  3. Step 3: Cross multiply
    2,043.90x = 2,821.20 × 1,520.64
  4. Step 4: Simplify right side
    2,043.90x = 4,290,029.57
  5. Step 5: Solve for x
    x = 4,290,029.57/2,043.90
  6. Step 6: Final answer
    x = 2,098.94

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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.