Home / 3,867.95-5,337.75-2,189.31

Finding the Fourth Proportional to 3,867.95, 5,337.75 and 2,189.31

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Solution

The fourth proportional to 3,867.95, 5,337.75 and 2,189.31 is: 3,021.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.95 : 5,337.75 = 2,189.31 : x
  2. Step 2: Convert to fraction form
    3,867.95/5,337.75 = 2,189.31/x
  3. Step 3: Cross multiply
    3,867.95x = 5,337.75 × 2,189.31
  4. Step 4: Simplify right side
    3,867.95x = 11,685,989.45
  5. Step 5: Solve for x
    x = 11,685,989.45/3,867.95
  6. Step 6: Final answer
    x = 3,021.24

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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.