Home / 3,991.95-5,509.22-2,313.93

Finding the Fourth Proportional to 3,991.95, 5,509.22 and 2,313.93

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Solution

The fourth proportional to 3,991.95, 5,509.22 and 2,313.93 is: 3,193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.95 : 5,509.22 = 2,313.93 : x
  2. Step 2: Convert to fraction form
    3,991.95/5,509.22 = 2,313.93/x
  3. Step 3: Cross multiply
    3,991.95x = 5,509.22 × 2,313.93
  4. Step 4: Simplify right side
    3,991.95x = 12,747,921.89
  5. Step 5: Solve for x
    x = 12,747,921.89/3,991.95
  6. Step 6: Final answer
    x = 3,193.41

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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.