Home / 5,131.92-7,688.70-3,396.36

Finding the Fourth Proportional to 5,131.92, 7,688.70 and 3,396.36

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Solution

The fourth proportional to 5,131.92, 7,688.70 and 3,396.36 is: 5,088.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.92 : 7,688.70 = 3,396.36 : x
  2. Step 2: Convert to fraction form
    5,131.92/7,688.70 = 3,396.36/x
  3. Step 3: Cross multiply
    5,131.92x = 7,688.70 × 3,396.36
  4. Step 4: Simplify right side
    5,131.92x = 26,113,593.13
  5. Step 5: Solve for x
    x = 26,113,593.13/5,131.92
  6. Step 6: Final answer
    x = 5,088.46

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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.