Home / 3,189.48-4,402.55-2,181.79

Finding the Fourth Proportional to 3,189.48, 4,402.55 and 2,181.79

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Solution

The fourth proportional to 3,189.48, 4,402.55 and 2,181.79 is: 3,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.48 : 4,402.55 = 2,181.79 : x
  2. Step 2: Convert to fraction form
    3,189.48/4,402.55 = 2,181.79/x
  3. Step 3: Cross multiply
    3,189.48x = 4,402.55 × 2,181.79
  4. Step 4: Simplify right side
    3,189.48x = 9,605,425.76
  5. Step 5: Solve for x
    x = 9,605,425.76/3,189.48
  6. Step 6: Final answer
    x = 3,011.60

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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.