Home / 3,120.57-4,306.21-1,941.63

Finding the Fourth Proportional to 3,120.57, 4,306.21 and 1,941.63

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Solution

The fourth proportional to 3,120.57, 4,306.21 and 1,941.63 is: 2,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.57 : 4,306.21 = 1,941.63 : x
  2. Step 2: Convert to fraction form
    3,120.57/4,306.21 = 1,941.63/x
  3. Step 3: Cross multiply
    3,120.57x = 4,306.21 × 1,941.63
  4. Step 4: Simplify right side
    3,120.57x = 8,361,066.52
  5. Step 5: Solve for x
    x = 8,361,066.52/3,120.57
  6. Step 6: Final answer
    x = 2,679.34

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Double scale
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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.