Home / 3,811.95-5,256.36-2,929.86

Finding the Fourth Proportional to 3,811.95, 5,256.36 and 2,929.86

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Solution

The fourth proportional to 3,811.95, 5,256.36 and 2,929.86 is: 4,040.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.95 : 5,256.36 = 2,929.86 : x
  2. Step 2: Convert to fraction form
    3,811.95/5,256.36 = 2,929.86/x
  3. Step 3: Cross multiply
    3,811.95x = 5,256.36 × 2,929.86
  4. Step 4: Simplify right side
    3,811.95x = 15,400,398.91
  5. Step 5: Solve for x
    x = 15,400,398.91/3,811.95
  6. Step 6: Final answer
    x = 4,040.03

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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.