Home / 5,643-7,787.34-3,286.44

Finding the Fourth Proportional to 5,643, 7,787.34 and 3,286.44

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Solution

The fourth proportional to 5,643, 7,787.34 and 3,286.44 is: 4,535.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643 : 7,787.34 = 3,286.44 : x
  2. Step 2: Convert to fraction form
    5,643/7,787.34 = 3,286.44/x
  3. Step 3: Cross multiply
    5,643x = 7,787.34 × 3,286.44
  4. Step 4: Simplify right side
    5,643x = 25,592,625.67
  5. Step 5: Solve for x
    x = 25,592,625.67/5,643
  6. Step 6: Final answer
    x = 4,535.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.