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Finding the Fourth Proportional to 5,616.21, 8,425.94 and 1,721.19

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Solution

The fourth proportional to 5,616.21, 8,425.94 and 1,721.19 is: 2,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.21 : 8,425.94 = 1,721.19 : x
  2. Step 2: Convert to fraction form
    5,616.21/8,425.94 = 1,721.19/x
  3. Step 3: Cross multiply
    5,616.21x = 8,425.94 × 1,721.19
  4. Step 4: Simplify right side
    5,616.21x = 14,502,635.06
  5. Step 5: Solve for x
    x = 14,502,635.06/5,616.21
  6. Step 6: Final answer
    x = 2,582.28

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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.