Home / 3,356.21-5,031.21-1,275.59

Finding the Fourth Proportional to 3,356.21, 5,031.21 and 1,275.59

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Solution

The fourth proportional to 3,356.21, 5,031.21 and 1,275.59 is: 1,912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,356.21 : 5,031.21 = 1,275.59 : x
  2. Step 2: Convert to fraction form
    3,356.21/5,031.21 = 1,275.59/x
  3. Step 3: Cross multiply
    3,356.21x = 5,031.21 × 1,275.59
  4. Step 4: Simplify right side
    3,356.21x = 6,417,761.16
  5. Step 5: Solve for x
    x = 6,417,761.16/3,356.21
  6. Step 6: Final answer
    x = 1,912.20

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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.