Home / 3,777.40-5,211.75-2,379.34

Finding the Fourth Proportional to 3,777.40, 5,211.75 and 2,379.34

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Solution

The fourth proportional to 3,777.40, 5,211.75 and 2,379.34 is: 3,282.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.40 : 5,211.75 = 2,379.34 : x
  2. Step 2: Convert to fraction form
    3,777.40/5,211.75 = 2,379.34/x
  3. Step 3: Cross multiply
    3,777.40x = 5,211.75 × 2,379.34
  4. Step 4: Simplify right side
    3,777.40x = 12,400,525.25
  5. Step 5: Solve for x
    x = 12,400,525.25/3,777.40
  6. Step 6: Final answer
    x = 3,282.82

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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.