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Finding the Fourth Proportional to 3,415.29, 5,122.95 and 2,923.23

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Solution

The fourth proportional to 3,415.29, 5,122.95 and 2,923.23 is: 4,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.29 : 5,122.95 = 2,923.23 : x
  2. Step 2: Convert to fraction form
    3,415.29/5,122.95 = 2,923.23/x
  3. Step 3: Cross multiply
    3,415.29x = 5,122.95 × 2,923.23
  4. Step 4: Simplify right side
    3,415.29x = 14,975,561.13
  5. Step 5: Solve for x
    x = 14,975,561.13/3,415.29
  6. Step 6: Final answer
    x = 4,384.86

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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.