Home / 7,913.98-11,867.29-2,915.09

Finding the Fourth Proportional to 7,913.98, 11,867.29 and 2,915.09

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Solution

The fourth proportional to 7,913.98, 11,867.29 and 2,915.09 is: 4,371.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.98 : 11,867.29 = 2,915.09 : x
  2. Step 2: Convert to fraction form
    7,913.98/11,867.29 = 2,915.09/x
  3. Step 3: Cross multiply
    7,913.98x = 11,867.29 × 2,915.09
  4. Step 4: Simplify right side
    7,913.98x = 34,594,212.68
  5. Step 5: Solve for x
    x = 34,594,212.68/7,913.98
  6. Step 6: Final answer
    x = 4,371.28

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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.