Home / 7,943.99-11,915.33-2,678.89

Finding the Fourth Proportional to 7,943.99, 11,915.33 and 2,678.89

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Solution

The fourth proportional to 7,943.99, 11,915.33 and 2,678.89 is: 4,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.99 : 11,915.33 = 2,678.89 : x
  2. Step 2: Convert to fraction form
    7,943.99/11,915.33 = 2,678.89/x
  3. Step 3: Cross multiply
    7,943.99x = 11,915.33 × 2,678.89
  4. Step 4: Simplify right side
    7,943.99x = 31,919,835.29
  5. Step 5: Solve for x
    x = 31,919,835.29/7,943.99
  6. Step 6: Final answer
    x = 4,018.11

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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.