Home / 3,419.57-5,127.30-1,661.11

Finding the Fourth Proportional to 3,419.57, 5,127.30 and 1,661.11

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Solution

The fourth proportional to 3,419.57, 5,127.30 and 1,661.11 is: 2,490.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.57 : 5,127.30 = 1,661.11 : x
  2. Step 2: Convert to fraction form
    3,419.57/5,127.30 = 1,661.11/x
  3. Step 3: Cross multiply
    3,419.57x = 5,127.30 × 1,661.11
  4. Step 4: Simplify right side
    3,419.57x = 8,516,996.48
  5. Step 5: Solve for x
    x = 8,516,996.48/3,419.57
  6. Step 6: Final answer
    x = 2,490.67

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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.