Home / 2,815.03-4,222.55-763.03

Finding the Fourth Proportional to 2,815.03, 4,222.55 and 763.03

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Solution

The fourth proportional to 2,815.03, 4,222.55 and 763.03 is: 1,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.03 : 4,222.55 = 763.03 : x
  2. Step 2: Convert to fraction form
    2,815.03/4,222.55 = 763.03/x
  3. Step 3: Cross multiply
    2,815.03x = 4,222.55 × 763.03
  4. Step 4: Simplify right side
    2,815.03x = 3,221,935.22
  5. Step 5: Solve for x
    x = 3,221,935.22/2,815.03
  6. Step 6: Final answer
    x = 1,144.55

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Similar ratio
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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.