Home / 7,787.29-11,679.21-2,239.40

Finding the Fourth Proportional to 7,787.29, 11,679.21 and 2,239.40

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Solution

The fourth proportional to 7,787.29, 11,679.21 and 2,239.40 is: 3,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.29 : 11,679.21 = 2,239.40 : x
  2. Step 2: Convert to fraction form
    7,787.29/11,679.21 = 2,239.40/x
  3. Step 3: Cross multiply
    7,787.29x = 11,679.21 × 2,239.40
  4. Step 4: Simplify right side
    7,787.29x = 26,154,422.87
  5. Step 5: Solve for x
    x = 26,154,422.87/7,787.29
  6. Step 6: Final answer
    x = 3,358.60

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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.