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Finding the Fourth Proportional to 2,479.21, 3,719.12 and 836.93

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Solution

The fourth proportional to 2,479.21, 3,719.12 and 836.93 is: 1,255.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.21 : 3,719.12 = 836.93 : x
  2. Step 2: Convert to fraction form
    2,479.21/3,719.12 = 836.93/x
  3. Step 3: Cross multiply
    2,479.21x = 3,719.12 × 836.93
  4. Step 4: Simplify right side
    2,479.21x = 3,112,648.21
  5. Step 5: Solve for x
    x = 3,112,648.21/2,479.21
  6. Step 6: Final answer
    x = 1,255.50

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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.