Home / 1,513.15-2,267.60-819.99

Finding the Fourth Proportional to 1,513.15, 2,267.60 and 819.99

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Solution

The fourth proportional to 1,513.15, 2,267.60 and 819.99 is: 1,228.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.15 : 2,267.60 = 819.99 : x
  2. Step 2: Convert to fraction form
    1,513.15/2,267.60 = 819.99/x
  3. Step 3: Cross multiply
    1,513.15x = 2,267.60 × 819.99
  4. Step 4: Simplify right side
    1,513.15x = 1,859,405.22
  5. Step 5: Solve for x
    x = 1,859,405.22/1,513.15
  6. Step 6: Final answer
    x = 1,228.83

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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.