Home / 3,924.04-5,415.12-2,155.48

Finding the Fourth Proportional to 3,924.04, 5,415.12 and 2,155.48

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Solution

The fourth proportional to 3,924.04, 5,415.12 and 2,155.48 is: 2,974.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.04 : 5,415.12 = 2,155.48 : x
  2. Step 2: Convert to fraction form
    3,924.04/5,415.12 = 2,155.48/x
  3. Step 3: Cross multiply
    3,924.04x = 5,415.12 × 2,155.48
  4. Step 4: Simplify right side
    3,924.04x = 11,672,182.86
  5. Step 5: Solve for x
    x = 11,672,182.86/3,924.04
  6. Step 6: Final answer
    x = 2,974.53

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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.