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Finding the Fourth Proportional to 2,974.68, 4,104.72 and 1,648.20

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Solution

The fourth proportional to 2,974.68, 4,104.72 and 1,648.20 is: 2,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.68 : 4,104.72 = 1,648.20 : x
  2. Step 2: Convert to fraction form
    2,974.68/4,104.72 = 1,648.20/x
  3. Step 3: Cross multiply
    2,974.68x = 4,104.72 × 1,648.20
  4. Step 4: Simplify right side
    2,974.68x = 6,765,399.50
  5. Step 5: Solve for x
    x = 6,765,399.50/2,974.68
  6. Step 6: Final answer
    x = 2,274.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.