Home / 3,428.79-5,143.77-1,237.74

Finding the Fourth Proportional to 3,428.79, 5,143.77 and 1,237.74

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Solution

The fourth proportional to 3,428.79, 5,143.77 and 1,237.74 is: 1,856.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.79 : 5,143.77 = 1,237.74 : x
  2. Step 2: Convert to fraction form
    3,428.79/5,143.77 = 1,237.74/x
  3. Step 3: Cross multiply
    3,428.79x = 5,143.77 × 1,237.74
  4. Step 4: Simplify right side
    3,428.79x = 6,366,649.88
  5. Step 5: Solve for x
    x = 6,366,649.88/3,428.79
  6. Step 6: Final answer
    x = 1,856.82

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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.