Home / 5,398.49-8,102.34-2,113.90

Finding the Fourth Proportional to 5,398.49, 8,102.34 and 2,113.90

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Solution

The fourth proportional to 5,398.49, 8,102.34 and 2,113.90 is: 3,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398.49 : 8,102.34 = 2,113.90 : x
  2. Step 2: Convert to fraction form
    5,398.49/8,102.34 = 2,113.90/x
  3. Step 3: Cross multiply
    5,398.49x = 8,102.34 × 2,113.90
  4. Step 4: Simplify right side
    5,398.49x = 17,127,516.27
  5. Step 5: Solve for x
    x = 17,127,516.27/5,398.49
  6. Step 6: Final answer
    x = 3,172.65

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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.