Home / 4,189.64-5,781.44-2,420.87

Finding the Fourth Proportional to 4,189.64, 5,781.44 and 2,420.87

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Solution

The fourth proportional to 4,189.64, 5,781.44 and 2,420.87 is: 3,340.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.64 : 5,781.44 = 2,420.87 : x
  2. Step 2: Convert to fraction form
    4,189.64/5,781.44 = 2,420.87/x
  3. Step 3: Cross multiply
    4,189.64x = 5,781.44 × 2,420.87
  4. Step 4: Simplify right side
    4,189.64x = 13,996,091.80
  5. Step 5: Solve for x
    x = 13,996,091.80/4,189.64
  6. Step 6: Final answer
    x = 3,340.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.