Home / 4,188.90-5,781.54-2,420.27

Finding the Fourth Proportional to 4,188.90, 5,781.54 and 2,420.27

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Solution

The fourth proportional to 4,188.90, 5,781.54 and 2,420.27 is: 3,340.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.90 : 5,781.54 = 2,420.27 : x
  2. Step 2: Convert to fraction form
    4,188.90/5,781.54 = 2,420.27/x
  3. Step 3: Cross multiply
    4,188.90x = 5,781.54 × 2,420.27
  4. Step 4: Simplify right side
    4,188.90x = 13,992,887.82
  5. Step 5: Solve for x
    x = 13,992,887.82/4,188.90
  6. Step 6: Final answer
    x = 3,340.47

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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.