Home / 3,920.85-5,410.77-2,152.53

Finding the Fourth Proportional to 3,920.85, 5,410.77 and 2,152.53

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Solution

The fourth proportional to 3,920.85, 5,410.77 and 2,152.53 is: 2,970.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.85 : 5,410.77 = 2,152.53 : x
  2. Step 2: Convert to fraction form
    3,920.85/5,410.77 = 2,152.53/x
  3. Step 3: Cross multiply
    3,920.85x = 5,410.77 × 2,152.53
  4. Step 4: Simplify right side
    3,920.85x = 11,646,844.75
  5. Step 5: Solve for x
    x = 11,646,844.75/3,920.85
  6. Step 6: Final answer
    x = 2,970.49

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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.