Home / 5,384.09-7,429.38-3,115.82

Finding the Fourth Proportional to 5,384.09, 7,429.38 and 3,115.82

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Solution

The fourth proportional to 5,384.09, 7,429.38 and 3,115.82 is: 4,299.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.09 : 7,429.38 = 3,115.82 : x
  2. Step 2: Convert to fraction form
    5,384.09/7,429.38 = 3,115.82/x
  3. Step 3: Cross multiply
    5,384.09x = 7,429.38 × 3,115.82
  4. Step 4: Simplify right side
    5,384.09x = 23,148,610.79
  5. Step 5: Solve for x
    x = 23,148,610.79/5,384.09
  6. Step 6: Final answer
    x = 4,299.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.