Home / 7,787.25-11,686.14-3,402.18

Finding the Fourth Proportional to 7,787.25, 11,686.14 and 3,402.18

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Solution

The fourth proportional to 7,787.25, 11,686.14 and 3,402.18 is: 5,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.25 : 11,686.14 = 3,402.18 : x
  2. Step 2: Convert to fraction form
    7,787.25/11,686.14 = 3,402.18/x
  3. Step 3: Cross multiply
    7,787.25x = 11,686.14 × 3,402.18
  4. Step 4: Simplify right side
    7,787.25x = 39,758,351.79
  5. Step 5: Solve for x
    x = 39,758,351.79/7,787.25
  6. Step 6: Final answer
    x = 5,105.57

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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.