Home / 2,360.40-3,539.30-1,128.12

Finding the Fourth Proportional to 2,360.40, 3,539.30 and 1,128.12

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Solution

The fourth proportional to 2,360.40, 3,539.30 and 1,128.12 is: 1,691.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,360.40 : 3,539.30 = 1,128.12 : x
  2. Step 2: Convert to fraction form
    2,360.40/3,539.30 = 1,128.12/x
  3. Step 3: Cross multiply
    2,360.40x = 3,539.30 × 1,128.12
  4. Step 4: Simplify right side
    2,360.40x = 3,992,755.12
  5. Step 5: Solve for x
    x = 3,992,755.12/2,360.40
  6. Step 6: Final answer
    x = 1,691.56

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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.