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Finding the Fourth Proportional to 9,076.75, 13,615.13 and 2,920.75

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Solution

The fourth proportional to 9,076.75, 13,615.13 and 2,920.75 is: 4,381.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,076.75 : 13,615.13 = 2,920.75 : x
  2. Step 2: Convert to fraction form
    9,076.75/13,615.13 = 2,920.75/x
  3. Step 3: Cross multiply
    9,076.75x = 13,615.13 × 2,920.75
  4. Step 4: Simplify right side
    9,076.75x = 39,766,390.95
  5. Step 5: Solve for x
    x = 39,766,390.95/9,076.75
  6. Step 6: Final answer
    x = 4,381.13

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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.