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Finding the Fourth Proportional to 5,813, 8,721.18 and 1,709

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Solution

The fourth proportional to 5,813, 8,721.18 and 1,709 is: 2,563.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813 : 8,721.18 = 1,709 : x
  2. Step 2: Convert to fraction form
    5,813/8,721.18 = 1,709/x
  3. Step 3: Cross multiply
    5,813x = 8,721.18 × 1,709
  4. Step 4: Simplify right side
    5,813x = 14,904,496.62
  5. Step 5: Solve for x
    x = 14,904,496.62/5,813
  6. Step 6: Final answer
    x = 2,563.99

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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.