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Finding the Fourth Proportional to 2,650.92, 3,970.08 and 1,479.12

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Solution

The fourth proportional to 2,650.92, 3,970.08 and 1,479.12 is: 2,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.92 : 3,970.08 = 1,479.12 : x
  2. Step 2: Convert to fraction form
    2,650.92/3,970.08 = 1,479.12/x
  3. Step 3: Cross multiply
    2,650.92x = 3,970.08 × 1,479.12
  4. Step 4: Simplify right side
    2,650.92x = 5,872,224.73
  5. Step 5: Solve for x
    x = 5,872,224.73/2,650.92
  6. Step 6: Final answer
    x = 2,215.16

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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.