Home / 3,420.87-5,126.85-1,545.37

Finding the Fourth Proportional to 3,420.87, 5,126.85 and 1,545.37

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Solution

The fourth proportional to 3,420.87, 5,126.85 and 1,545.37 is: 2,316.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.87 : 5,126.85 = 1,545.37 : x
  2. Step 2: Convert to fraction form
    3,420.87/5,126.85 = 1,545.37/x
  3. Step 3: Cross multiply
    3,420.87x = 5,126.85 × 1,545.37
  4. Step 4: Simplify right side
    3,420.87x = 7,922,867.37
  5. Step 5: Solve for x
    x = 7,922,867.37/3,420.87
  6. Step 6: Final answer
    x = 2,316.04

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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.