Home / 4,189.56-5,781.60-2,421.16

Finding the Fourth Proportional to 4,189.56, 5,781.60 and 2,421.16

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Solution

The fourth proportional to 4,189.56, 5,781.60 and 2,421.16 is: 3,341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.56 : 5,781.60 = 2,421.16 : x
  2. Step 2: Convert to fraction form
    4,189.56/5,781.60 = 2,421.16/x
  3. Step 3: Cross multiply
    4,189.56x = 5,781.60 × 2,421.16
  4. Step 4: Simplify right side
    4,189.56x = 13,998,178.66
  5. Step 5: Solve for x
    x = 13,998,178.66/4,189.56
  6. Step 6: Final answer
    x = 3,341.20

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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.