Home / 1,817.18-2,721.90-1,230.20

Finding the Fourth Proportional to 1,817.18, 2,721.90 and 1,230.20

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Solution

The fourth proportional to 1,817.18, 2,721.90 and 1,230.20 is: 1,842.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.18 : 2,721.90 = 1,230.20 : x
  2. Step 2: Convert to fraction form
    1,817.18/2,721.90 = 1,230.20/x
  3. Step 3: Cross multiply
    1,817.18x = 2,721.90 × 1,230.20
  4. Step 4: Simplify right side
    1,817.18x = 3,348,481.38
  5. Step 5: Solve for x
    x = 3,348,481.38/1,817.18
  6. Step 6: Final answer
    x = 1,842.68

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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.