Home / 3,120.32-4,305.87-1,941.38

Finding the Fourth Proportional to 3,120.32, 4,305.87 and 1,941.38

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Solution

The fourth proportional to 3,120.32, 4,305.87 and 1,941.38 is: 2,679.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.32 : 4,305.87 = 1,941.38 : x
  2. Step 2: Convert to fraction form
    3,120.32/4,305.87 = 1,941.38/x
  3. Step 3: Cross multiply
    3,120.32x = 4,305.87 × 1,941.38
  4. Step 4: Simplify right side
    3,120.32x = 8,359,329.90
  5. Step 5: Solve for x
    x = 8,359,329.90/3,120.32
  6. Step 6: Final answer
    x = 2,679.00

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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.