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Finding the Fourth Proportional to 2,407.13, 3,610.79 and 763.64

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Solution

The fourth proportional to 2,407.13, 3,610.79 and 763.64 is: 1,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.13 : 3,610.79 = 763.64 : x
  2. Step 2: Convert to fraction form
    2,407.13/3,610.79 = 763.64/x
  3. Step 3: Cross multiply
    2,407.13x = 3,610.79 × 763.64
  4. Step 4: Simplify right side
    2,407.13x = 2,757,325.62
  5. Step 5: Solve for x
    x = 2,757,325.62/2,407.13
  6. Step 6: Final answer
    x = 1,145.49

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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.