Home / 3,150.36-4,342.13-2,153.90

Finding the Fourth Proportional to 3,150.36, 4,342.13 and 2,153.90

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Solution

The fourth proportional to 3,150.36, 4,342.13 and 2,153.90 is: 2,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.36 : 4,342.13 = 2,153.90 : x
  2. Step 2: Convert to fraction form
    3,150.36/4,342.13 = 2,153.90/x
  3. Step 3: Cross multiply
    3,150.36x = 4,342.13 × 2,153.90
  4. Step 4: Simplify right side
    3,150.36x = 9,352,481.33
  5. Step 5: Solve for x
    x = 9,352,481.33/3,150.36
  6. Step 6: Final answer
    x = 2,968.70

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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.