Home / 1,815.35-2,722.81-499.20

Finding the Fourth Proportional to 1,815.35, 2,722.81 and 499.20

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Solution

The fourth proportional to 1,815.35, 2,722.81 and 499.20 is: 748.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.35 : 2,722.81 = 499.20 : x
  2. Step 2: Convert to fraction form
    1,815.35/2,722.81 = 499.20/x
  3. Step 3: Cross multiply
    1,815.35x = 2,722.81 × 499.20
  4. Step 4: Simplify right side
    1,815.35x = 1,359,213.14
  5. Step 5: Solve for x
    x = 1,359,213.14/1,815.35
  6. Step 6: Final answer
    x = 748.74

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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.