Home / 3,913.23-5,399.39-2,319.08

Finding the Fourth Proportional to 3,913.23, 5,399.39 and 2,319.08

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Solution

The fourth proportional to 3,913.23, 5,399.39 and 2,319.08 is: 3,199.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.23 : 5,399.39 = 2,319.08 : x
  2. Step 2: Convert to fraction form
    3,913.23/5,399.39 = 2,319.08/x
  3. Step 3: Cross multiply
    3,913.23x = 5,399.39 × 2,319.08
  4. Step 4: Simplify right side
    3,913.23x = 12,521,578.77
  5. Step 5: Solve for x
    x = 12,521,578.77/3,913.23
  6. Step 6: Final answer
    x = 3,199.81

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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.