Home / 2,379.12-3,569.70-1,225.68

Finding the Fourth Proportional to 2,379.12, 3,569.70 and 1,225.68

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Solution

The fourth proportional to 2,379.12, 3,569.70 and 1,225.68 is: 1,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.12 : 3,569.70 = 1,225.68 : x
  2. Step 2: Convert to fraction form
    2,379.12/3,569.70 = 1,225.68/x
  3. Step 3: Cross multiply
    2,379.12x = 3,569.70 × 1,225.68
  4. Step 4: Simplify right side
    2,379.12x = 4,375,309.90
  5. Step 5: Solve for x
    x = 4,375,309.90/2,379.12
  6. Step 6: Final answer
    x = 1,839.05

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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.