Home / 3,991.89-5,508.19-2,313.46

Finding the Fourth Proportional to 3,991.89, 5,508.19 and 2,313.46

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Solution

The fourth proportional to 3,991.89, 5,508.19 and 2,313.46 is: 3,192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.89 : 5,508.19 = 2,313.46 : x
  2. Step 2: Convert to fraction form
    3,991.89/5,508.19 = 2,313.46/x
  3. Step 3: Cross multiply
    3,991.89x = 5,508.19 × 2,313.46
  4. Step 4: Simplify right side
    3,991.89x = 12,742,977.24
  5. Step 5: Solve for x
    x = 12,742,977.24/3,991.89
  6. Step 6: Final answer
    x = 3,192.22

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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.