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Finding the Fourth Proportional to 3,578.72, 5,368.12 and 2,353.84

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Solution

The fourth proportional to 3,578.72, 5,368.12 and 2,353.84 is: 3,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.72 : 5,368.12 = 2,353.84 : x
  2. Step 2: Convert to fraction form
    3,578.72/5,368.12 = 2,353.84/x
  3. Step 3: Cross multiply
    3,578.72x = 5,368.12 × 2,353.84
  4. Step 4: Simplify right side
    3,578.72x = 12,635,695.58
  5. Step 5: Solve for x
    x = 12,635,695.58/3,578.72
  6. Step 6: Final answer
    x = 3,530.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.