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Finding the Fourth Proportional to 7,486.78, 11,238.68 and 3,793.18

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Solution

The fourth proportional to 7,486.78, 11,238.68 and 3,793.18 is: 5,694.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.78 : 11,238.68 = 3,793.18 : x
  2. Step 2: Convert to fraction form
    7,486.78/11,238.68 = 3,793.18/x
  3. Step 3: Cross multiply
    7,486.78x = 11,238.68 × 3,793.18
  4. Step 4: Simplify right side
    7,486.78x = 42,630,317.24
  5. Step 5: Solve for x
    x = 42,630,317.24/7,486.78
  6. Step 6: Final answer
    x = 5,694.08

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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.