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Finding the Fourth Proportional to 3,451.91, 4,763.68 and 1,880

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Solution

The fourth proportional to 3,451.91, 4,763.68 and 1,880 is: 2,594.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.91 : 4,763.68 = 1,880 : x
  2. Step 2: Convert to fraction form
    3,451.91/4,763.68 = 1,880/x
  3. Step 3: Cross multiply
    3,451.91x = 4,763.68 × 1,880
  4. Step 4: Simplify right side
    3,451.91x = 8,955,718.40
  5. Step 5: Solve for x
    x = 8,955,718.40/3,451.91
  6. Step 6: Final answer
    x = 2,594.43

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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.