Home / 3,147.96-4,345.52-1,968.76

Finding the Fourth Proportional to 3,147.96, 4,345.52 and 1,968.76

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Solution

The fourth proportional to 3,147.96, 4,345.52 and 1,968.76 is: 2,717.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.96 : 4,345.52 = 1,968.76 : x
  2. Step 2: Convert to fraction form
    3,147.96/4,345.52 = 1,968.76/x
  3. Step 3: Cross multiply
    3,147.96x = 4,345.52 × 1,968.76
  4. Step 4: Simplify right side
    3,147.96x = 8,555,285.96
  5. Step 5: Solve for x
    x = 8,555,285.96/3,147.96
  6. Step 6: Final answer
    x = 2,717.72

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Half scale
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Double scale
Find fourth proportional to 3,148.96, 4,346.90 and 1,969.76
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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.