Home / 4,190.73-5,781.40-2,421.28

Finding the Fourth Proportional to 4,190.73, 5,781.40 and 2,421.28

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Solution

The fourth proportional to 4,190.73, 5,781.40 and 2,421.28 is: 3,340.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.73 : 5,781.40 = 2,421.28 : x
  2. Step 2: Convert to fraction form
    4,190.73/5,781.40 = 2,421.28/x
  3. Step 3: Cross multiply
    4,190.73x = 5,781.40 × 2,421.28
  4. Step 4: Simplify right side
    4,190.73x = 13,998,388.19
  5. Step 5: Solve for x
    x = 13,998,388.19/4,190.73
  6. Step 6: Final answer
    x = 3,340.32

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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.