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Finding the Fourth Proportional to 3,443.70, 4,750.81 and 2,116.92

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Solution

The fourth proportional to 3,443.70, 4,750.81 and 2,116.92 is: 2,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,443.70 : 4,750.81 = 2,116.92 : x
  2. Step 2: Convert to fraction form
    3,443.70/4,750.81 = 2,116.92/x
  3. Step 3: Cross multiply
    3,443.70x = 4,750.81 × 2,116.92
  4. Step 4: Simplify right side
    3,443.70x = 10,057,084.71
  5. Step 5: Solve for x
    x = 10,057,084.71/3,443.70
  6. Step 6: Final answer
    x = 2,920.43

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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.