Home / 2,808.27-3,875.20-1,689.25

Finding the Fourth Proportional to 2,808.27, 3,875.20 and 1,689.25

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Solution

The fourth proportional to 2,808.27, 3,875.20 and 1,689.25 is: 2,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.27 : 3,875.20 = 1,689.25 : x
  2. Step 2: Convert to fraction form
    2,808.27/3,875.20 = 1,689.25/x
  3. Step 3: Cross multiply
    2,808.27x = 3,875.20 × 1,689.25
  4. Step 4: Simplify right side
    2,808.27x = 6,546,181.60
  5. Step 5: Solve for x
    x = 6,546,181.60/2,808.27
  6. Step 6: Final answer
    x = 2,331.04

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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.