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Finding the Fourth Proportional to 3,788.46, 5,681.16 and 1,447.68

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Solution

The fourth proportional to 3,788.46, 5,681.16 and 1,447.68 is: 2,170.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.46 : 5,681.16 = 1,447.68 : x
  2. Step 2: Convert to fraction form
    3,788.46/5,681.16 = 1,447.68/x
  3. Step 3: Cross multiply
    3,788.46x = 5,681.16 × 1,447.68
  4. Step 4: Simplify right side
    3,788.46x = 8,224,501.71
  5. Step 5: Solve for x
    x = 8,224,501.71/3,788.46
  6. Step 6: Final answer
    x = 2,170.94

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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.