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Finding the Fourth Proportional to 2,479.55, 3,719.33 and 836.11

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Solution

The fourth proportional to 2,479.55, 3,719.33 and 836.11 is: 1,254.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.55 : 3,719.33 = 836.11 : x
  2. Step 2: Convert to fraction form
    2,479.55/3,719.33 = 836.11/x
  3. Step 3: Cross multiply
    2,479.55x = 3,719.33 × 836.11
  4. Step 4: Simplify right side
    2,479.55x = 3,109,749.34
  5. Step 5: Solve for x
    x = 3,109,749.34/2,479.55
  6. Step 6: Final answer
    x = 1,254.16

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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.