Home / 2,178.93-3,261.09-2,149.77

Finding the Fourth Proportional to 2,178.93, 3,261.09 and 2,149.77

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Solution

The fourth proportional to 2,178.93, 3,261.09 and 2,149.77 is: 3,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.93 : 3,261.09 = 2,149.77 : x
  2. Step 2: Convert to fraction form
    2,178.93/3,261.09 = 2,149.77/x
  3. Step 3: Cross multiply
    2,178.93x = 3,261.09 × 2,149.77
  4. Step 4: Simplify right side
    2,178.93x = 7,010,593.45
  5. Step 5: Solve for x
    x = 7,010,593.45/2,178.93
  6. Step 6: Final answer
    x = 3,217.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.