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Finding the Fourth Proportional to 5,816.92, 8,721.08 and 1,865.90

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Solution

The fourth proportional to 5,816.92, 8,721.08 and 1,865.90 is: 2,797.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,816.92 : 8,721.08 = 1,865.90 : x
  2. Step 2: Convert to fraction form
    5,816.92/8,721.08 = 1,865.90/x
  3. Step 3: Cross multiply
    5,816.92x = 8,721.08 × 1,865.90
  4. Step 4: Simplify right side
    5,816.92x = 16,272,663.17
  5. Step 5: Solve for x
    x = 16,272,663.17/5,816.92
  6. Step 6: Final answer
    x = 2,797.47

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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.