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Finding the Fourth Proportional to 3,607.77, 4,978.08 and 2,191.17

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Solution

The fourth proportional to 3,607.77, 4,978.08 and 2,191.17 is: 3,023.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.77 : 4,978.08 = 2,191.17 : x
  2. Step 2: Convert to fraction form
    3,607.77/4,978.08 = 2,191.17/x
  3. Step 3: Cross multiply
    3,607.77x = 4,978.08 × 2,191.17
  4. Step 4: Simplify right side
    3,607.77x = 10,907,819.55
  5. Step 5: Solve for x
    x = 10,907,819.55/3,607.77
  6. Step 6: Final answer
    x = 3,023.42

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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.