Home / 2,188.30-3,020.13-1,304.11

Finding the Fourth Proportional to 2,188.30, 3,020.13 and 1,304.11

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Solution

The fourth proportional to 2,188.30, 3,020.13 and 1,304.11 is: 1,799.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.30 : 3,020.13 = 1,304.11 : x
  2. Step 2: Convert to fraction form
    2,188.30/3,020.13 = 1,304.11/x
  3. Step 3: Cross multiply
    2,188.30x = 3,020.13 × 1,304.11
  4. Step 4: Simplify right side
    2,188.30x = 3,938,581.73
  5. Step 5: Solve for x
    x = 3,938,581.73/2,188.30
  6. Step 6: Final answer
    x = 1,799.84

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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.