Home / 2,188.80-3,291.30-1,832.40

Finding the Fourth Proportional to 2,188.80, 3,291.30 and 1,832.40

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Solution

The fourth proportional to 2,188.80, 3,291.30 and 1,832.40 is: 2,755.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.80 : 3,291.30 = 1,832.40 : x
  2. Step 2: Convert to fraction form
    2,188.80/3,291.30 = 1,832.40/x
  3. Step 3: Cross multiply
    2,188.80x = 3,291.30 × 1,832.40
  4. Step 4: Simplify right side
    2,188.80x = 6,030,978.12
  5. Step 5: Solve for x
    x = 6,030,978.12/2,188.80
  6. Step 6: Final answer
    x = 2,755.38

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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.