Home / 4,189.03-5,781.71-2,420.39

Finding the Fourth Proportional to 4,189.03, 5,781.71 and 2,420.39

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Solution

The fourth proportional to 4,189.03, 5,781.71 and 2,420.39 is: 3,340.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.03 : 5,781.71 = 2,420.39 : x
  2. Step 2: Convert to fraction form
    4,189.03/5,781.71 = 2,420.39/x
  3. Step 3: Cross multiply
    4,189.03x = 5,781.71 × 2,420.39
  4. Step 4: Simplify right side
    4,189.03x = 13,994,013.57
  5. Step 5: Solve for x
    x = 13,994,013.57/4,189.03
  6. Step 6: Final answer
    x = 3,340.64

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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.