Home / 5,410.76-8,119.79-2,123.47

Finding the Fourth Proportional to 5,410.76, 8,119.79 and 2,123.47

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Solution

The fourth proportional to 5,410.76, 8,119.79 and 2,123.47 is: 3,186.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.76 : 8,119.79 = 2,123.47 : x
  2. Step 2: Convert to fraction form
    5,410.76/8,119.79 = 2,123.47/x
  3. Step 3: Cross multiply
    5,410.76x = 8,119.79 × 2,123.47
  4. Step 4: Simplify right side
    5,410.76x = 17,242,110.17
  5. Step 5: Solve for x
    x = 17,242,110.17/5,410.76
  6. Step 6: Final answer
    x = 3,186.63

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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.