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Finding the Fourth Proportional to 3,392.05, 4,680.89 and 1,975.78

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Solution

The fourth proportional to 3,392.05, 4,680.89 and 1,975.78 is: 2,726.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.05 : 4,680.89 = 1,975.78 : x
  2. Step 2: Convert to fraction form
    3,392.05/4,680.89 = 1,975.78/x
  3. Step 3: Cross multiply
    3,392.05x = 4,680.89 × 1,975.78
  4. Step 4: Simplify right side
    3,392.05x = 9,248,394.67
  5. Step 5: Solve for x
    x = 9,248,394.67/3,392.05
  6. Step 6: Final answer
    x = 2,726.49

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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.