Home / 3,812.80-5,261.72-2,320.76

Finding the Fourth Proportional to 3,812.80, 5,261.72 and 2,320.76

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Solution

The fourth proportional to 3,812.80, 5,261.72 and 2,320.76 is: 3,202.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.80 : 5,261.72 = 2,320.76 : x
  2. Step 2: Convert to fraction form
    3,812.80/5,261.72 = 2,320.76/x
  3. Step 3: Cross multiply
    3,812.80x = 5,261.72 × 2,320.76
  4. Step 4: Simplify right side
    3,812.80x = 12,211,189.31
  5. Step 5: Solve for x
    x = 12,211,189.31/3,812.80
  6. Step 6: Final answer
    x = 3,202.68

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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.