Home / 3,081.48-4,255.55-1,962.92

Finding the Fourth Proportional to 3,081.48, 4,255.55 and 1,962.92

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Solution

The fourth proportional to 3,081.48, 4,255.55 and 1,962.92 is: 2,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.48 : 4,255.55 = 1,962.92 : x
  2. Step 2: Convert to fraction form
    3,081.48/4,255.55 = 1,962.92/x
  3. Step 3: Cross multiply
    3,081.48x = 4,255.55 × 1,962.92
  4. Step 4: Simplify right side
    3,081.48x = 8,353,304.21
  5. Step 5: Solve for x
    x = 8,353,304.21/3,081.48
  6. Step 6: Final answer
    x = 2,710.81

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Half scale
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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.