Home / 3,189.44-4,400.16-1,948.16

Finding the Fourth Proportional to 3,189.44, 4,400.16 and 1,948.16

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Solution

The fourth proportional to 3,189.44, 4,400.16 and 1,948.16 is: 2,687.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.44 : 4,400.16 = 1,948.16 : x
  2. Step 2: Convert to fraction form
    3,189.44/4,400.16 = 1,948.16/x
  3. Step 3: Cross multiply
    3,189.44x = 4,400.16 × 1,948.16
  4. Step 4: Simplify right side
    3,189.44x = 8,572,215.71
  5. Step 5: Solve for x
    x = 8,572,215.71/3,189.44
  6. Step 6: Final answer
    x = 2,687.69

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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.