Home / 7,787.75-11,685.27-3,406.46

Finding the Fourth Proportional to 7,787.75, 11,685.27 and 3,406.46

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Solution

The fourth proportional to 7,787.75, 11,685.27 and 3,406.46 is: 5,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.75 : 11,685.27 = 3,406.46 : x
  2. Step 2: Convert to fraction form
    7,787.75/11,685.27 = 3,406.46/x
  3. Step 3: Cross multiply
    7,787.75x = 11,685.27 × 3,406.46
  4. Step 4: Simplify right side
    7,787.75x = 39,805,404.84
  5. Step 5: Solve for x
    x = 39,805,404.84/7,787.75
  6. Step 6: Final answer
    x = 5,111.28

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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.