Home / 3,428.81-5,143.55-1,237.71

Finding the Fourth Proportional to 3,428.81, 5,143.55 and 1,237.71

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Solution

The fourth proportional to 3,428.81, 5,143.55 and 1,237.71 is: 1,856.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.81 : 5,143.55 = 1,237.71 : x
  2. Step 2: Convert to fraction form
    3,428.81/5,143.55 = 1,237.71/x
  3. Step 3: Cross multiply
    3,428.81x = 5,143.55 × 1,237.71
  4. Step 4: Simplify right side
    3,428.81x = 6,366,199.93
  5. Step 5: Solve for x
    x = 6,366,199.93/3,428.81
  6. Step 6: Final answer
    x = 1,856.68

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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.