Home / 1,513.68-2,268.32-819.76

Finding the Fourth Proportional to 1,513.68, 2,268.32 and 819.76

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Solution

The fourth proportional to 1,513.68, 2,268.32 and 819.76 is: 1,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.68 : 2,268.32 = 819.76 : x
  2. Step 2: Convert to fraction form
    1,513.68/2,268.32 = 819.76/x
  3. Step 3: Cross multiply
    1,513.68x = 2,268.32 × 819.76
  4. Step 4: Simplify right side
    1,513.68x = 1,859,478.00
  5. Step 5: Solve for x
    x = 1,859,478.00/1,513.68
  6. Step 6: Final answer
    x = 1,228.45

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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.