Home / 2,931.22-4,040.35-2,689.81

Finding the Fourth Proportional to 2,931.22, 4,040.35 and 2,689.81

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Solution

The fourth proportional to 2,931.22, 4,040.35 and 2,689.81 is: 3,707.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.22 : 4,040.35 = 2,689.81 : x
  2. Step 2: Convert to fraction form
    2,931.22/4,040.35 = 2,689.81/x
  3. Step 3: Cross multiply
    2,931.22x = 4,040.35 × 2,689.81
  4. Step 4: Simplify right side
    2,931.22x = 10,867,757.01
  5. Step 5: Solve for x
    x = 10,867,757.01/2,931.22
  6. Step 6: Final answer
    x = 3,707.59

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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.