Home / 4,189.44-5,781.30-2,421

Finding the Fourth Proportional to 4,189.44, 5,781.30 and 2,421

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Solution

The fourth proportional to 4,189.44, 5,781.30 and 2,421 is: 3,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.44 : 5,781.30 = 2,421 : x
  2. Step 2: Convert to fraction form
    4,189.44/5,781.30 = 2,421/x
  3. Step 3: Cross multiply
    4,189.44x = 5,781.30 × 2,421
  4. Step 4: Simplify right side
    4,189.44x = 13,996,527.30
  5. Step 5: Solve for x
    x = 13,996,527.30/4,189.44
  6. Step 6: Final answer
    x = 3,340.91

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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.