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Finding the Fourth Proportional to 1,819.93, 2,729.90 and 723.73

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Solution

The fourth proportional to 1,819.93, 2,729.90 and 723.73 is: 1,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.93 : 2,729.90 = 723.73 : x
  2. Step 2: Convert to fraction form
    1,819.93/2,729.90 = 723.73/x
  3. Step 3: Cross multiply
    1,819.93x = 2,729.90 × 723.73
  4. Step 4: Simplify right side
    1,819.93x = 1,975,710.53
  5. Step 5: Solve for x
    x = 1,975,710.53/1,819.93
  6. Step 6: Final answer
    x = 1,085.60

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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.