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Finding the Fourth Proportional to 5,191.46, 7,788.21 and 1,493.72

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Solution

The fourth proportional to 5,191.46, 7,788.21 and 1,493.72 is: 2,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.46 : 7,788.21 = 1,493.72 : x
  2. Step 2: Convert to fraction form
    5,191.46/7,788.21 = 1,493.72/x
  3. Step 3: Cross multiply
    5,191.46x = 7,788.21 × 1,493.72
  4. Step 4: Simplify right side
    5,191.46x = 11,633,424.51
  5. Step 5: Solve for x
    x = 11,633,424.51/5,191.46
  6. Step 6: Final answer
    x = 2,240.88

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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.