Home / 3,858.10-5,787.15-1,665.30

Finding the Fourth Proportional to 3,858.10, 5,787.15 and 1,665.30

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Solution

The fourth proportional to 3,858.10, 5,787.15 and 1,665.30 is: 2,497.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.10 : 5,787.15 = 1,665.30 : x
  2. Step 2: Convert to fraction form
    3,858.10/5,787.15 = 1,665.30/x
  3. Step 3: Cross multiply
    3,858.10x = 5,787.15 × 1,665.30
  4. Step 4: Simplify right side
    3,858.10x = 9,637,340.90
  5. Step 5: Solve for x
    x = 9,637,340.90/3,858.10
  6. Step 6: Final answer
    x = 2,497.95

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Similar ratio
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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.