Home / 4,189.28-5,781.36-2,421.08

Finding the Fourth Proportional to 4,189.28, 5,781.36 and 2,421.08

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Solution

The fourth proportional to 4,189.28, 5,781.36 and 2,421.08 is: 3,341.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.28 : 5,781.36 = 2,421.08 : x
  2. Step 2: Convert to fraction form
    4,189.28/5,781.36 = 2,421.08/x
  3. Step 3: Cross multiply
    4,189.28x = 5,781.36 × 2,421.08
  4. Step 4: Simplify right side
    4,189.28x = 13,997,135.07
  5. Step 5: Solve for x
    x = 13,997,135.07/4,189.28
  6. Step 6: Final answer
    x = 3,341.18

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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.