Home / 3,855.77-5,320.38-2,261.81

Finding the Fourth Proportional to 3,855.77, 5,320.38 and 2,261.81

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Solution

The fourth proportional to 3,855.77, 5,320.38 and 2,261.81 is: 3,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.77 : 5,320.38 = 2,261.81 : x
  2. Step 2: Convert to fraction form
    3,855.77/5,320.38 = 2,261.81/x
  3. Step 3: Cross multiply
    3,855.77x = 5,320.38 × 2,261.81
  4. Step 4: Simplify right side
    3,855.77x = 12,033,688.69
  5. Step 5: Solve for x
    x = 12,033,688.69/3,855.77
  6. Step 6: Final answer
    x = 3,120.96

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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.