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Finding the Fourth Proportional to 9,915.66, 14,888.07 and 4,083.66

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Solution

The fourth proportional to 9,915.66, 14,888.07 and 4,083.66 is: 6,131.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.66 : 14,888.07 = 4,083.66 : x
  2. Step 2: Convert to fraction form
    9,915.66/14,888.07 = 4,083.66/x
  3. Step 3: Cross multiply
    9,915.66x = 14,888.07 × 4,083.66
  4. Step 4: Simplify right side
    9,915.66x = 60,797,815.94
  5. Step 5: Solve for x
    x = 60,797,815.94/9,915.66
  6. Step 6: Final answer
    x = 6,131.49

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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.