Home / 3,904.19-5,387.99-2,311.77

Finding the Fourth Proportional to 3,904.19, 5,387.99 and 2,311.77

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Solution

The fourth proportional to 3,904.19, 5,387.99 and 2,311.77 is: 3,190.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.19 : 5,387.99 = 2,311.77 : x
  2. Step 2: Convert to fraction form
    3,904.19/5,387.99 = 2,311.77/x
  3. Step 3: Cross multiply
    3,904.19x = 5,387.99 × 2,311.77
  4. Step 4: Simplify right side
    3,904.19x = 12,455,782.08
  5. Step 5: Solve for x
    x = 12,455,782.08/3,904.19
  6. Step 6: Final answer
    x = 3,190.37

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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.