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Finding the Fourth Proportional to 11,773.46, 17,660.16 and 3,987.74

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Solution

The fourth proportional to 11,773.46, 17,660.16 and 3,987.74 is: 5,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,773.46 : 17,660.16 = 3,987.74 : x
  2. Step 2: Convert to fraction form
    11,773.46/17,660.16 = 3,987.74/x
  3. Step 3: Cross multiply
    11,773.46x = 17,660.16 × 3,987.74
  4. Step 4: Simplify right side
    11,773.46x = 70,424,126.44
  5. Step 5: Solve for x
    x = 70,424,126.44/11,773.46
  6. Step 6: Final answer
    x = 5,981.60

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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.