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Finding the Fourth Proportional to 3,375.70, 4,655.44 and 2,116.92

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Solution

The fourth proportional to 3,375.70, 4,655.44 and 2,116.92 is: 2,919.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.70 : 4,655.44 = 2,116.92 : x
  2. Step 2: Convert to fraction form
    3,375.70/4,655.44 = 2,116.92/x
  3. Step 3: Cross multiply
    3,375.70x = 4,655.44 × 2,116.92
  4. Step 4: Simplify right side
    3,375.70x = 9,855,194.04
  5. Step 5: Solve for x
    x = 9,855,194.04/3,375.70
  6. Step 6: Final answer
    x = 2,919.45

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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.