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Finding the Fourth Proportional to 3,587.78, 4,951.12 and 1,994.42

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Solution

The fourth proportional to 3,587.78, 4,951.12 and 1,994.42 is: 2,752.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.78 : 4,951.12 = 1,994.42 : x
  2. Step 2: Convert to fraction form
    3,587.78/4,951.12 = 1,994.42/x
  3. Step 3: Cross multiply
    3,587.78x = 4,951.12 × 1,994.42
  4. Step 4: Simplify right side
    3,587.78x = 9,874,578.02
  5. Step 5: Solve for x
    x = 9,874,578.02/3,587.78
  6. Step 6: Final answer
    x = 2,752.28

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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.