Home / 3,151.68-4,347.78-2,448.20

Finding the Fourth Proportional to 3,151.68, 4,347.78 and 2,448.20

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Solution

The fourth proportional to 3,151.68, 4,347.78 and 2,448.20 is: 3,377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.68 : 4,347.78 = 2,448.20 : x
  2. Step 2: Convert to fraction form
    3,151.68/4,347.78 = 2,448.20/x
  3. Step 3: Cross multiply
    3,151.68x = 4,347.78 × 2,448.20
  4. Step 4: Simplify right side
    3,151.68x = 10,644,213.26
  5. Step 5: Solve for x
    x = 10,644,213.26/3,151.68
  6. Step 6: Final answer
    x = 3,377.31

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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.