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Finding the Fourth Proportional to 5,214.19, 7,821.29 and 1,753.87

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Solution

The fourth proportional to 5,214.19, 7,821.29 and 1,753.87 is: 2,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.19 : 7,821.29 = 1,753.87 : x
  2. Step 2: Convert to fraction form
    5,214.19/7,821.29 = 1,753.87/x
  3. Step 3: Cross multiply
    5,214.19x = 7,821.29 × 1,753.87
  4. Step 4: Simplify right side
    5,214.19x = 13,717,525.89
  5. Step 5: Solve for x
    x = 13,717,525.89/5,214.19
  6. Step 6: Final answer
    x = 2,630.81

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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.