Home / 5,787.56-7,987.20-3,429.20

Finding the Fourth Proportional to 5,787.56, 7,987.20 and 3,429.20

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Solution

The fourth proportional to 5,787.56, 7,987.20 and 3,429.20 is: 4,732.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.56 : 7,987.20 = 3,429.20 : x
  2. Step 2: Convert to fraction form
    5,787.56/7,987.20 = 3,429.20/x
  3. Step 3: Cross multiply
    5,787.56x = 7,987.20 × 3,429.20
  4. Step 4: Simplify right side
    5,787.56x = 27,389,706.24
  5. Step 5: Solve for x
    x = 27,389,706.24/5,787.56
  6. Step 6: Final answer
    x = 4,732.51

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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.