Home / 7,915.83-11,872.80-2,072.88

Finding the Fourth Proportional to 7,915.83, 11,872.80 and 2,072.88

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Solution

The fourth proportional to 7,915.83, 11,872.80 and 2,072.88 is: 3,109.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.83 : 11,872.80 = 2,072.88 : x
  2. Step 2: Convert to fraction form
    7,915.83/11,872.80 = 2,072.88/x
  3. Step 3: Cross multiply
    7,915.83x = 11,872.80 × 2,072.88
  4. Step 4: Simplify right side
    7,915.83x = 24,610,889.66
  5. Step 5: Solve for x
    x = 24,610,889.66/7,915.83
  6. Step 6: Final answer
    x = 3,109.07

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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.