Home / 2,931.26-4,393.78-1,820.66

Finding the Fourth Proportional to 2,931.26, 4,393.78 and 1,820.66

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Solution

The fourth proportional to 2,931.26, 4,393.78 and 1,820.66 is: 2,729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.26 : 4,393.78 = 1,820.66 : x
  2. Step 2: Convert to fraction form
    2,931.26/4,393.78 = 1,820.66/x
  3. Step 3: Cross multiply
    2,931.26x = 4,393.78 × 1,820.66
  4. Step 4: Simplify right side
    2,931.26x = 7,999,552.97
  5. Step 5: Solve for x
    x = 7,999,552.97/2,931.26
  6. Step 6: Final answer
    x = 2,729.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.