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Finding the Fourth Proportional to 5,163.40, 7,746.72 and 1,876.42

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Solution

The fourth proportional to 5,163.40, 7,746.72 and 1,876.42 is: 2,815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.40 : 7,746.72 = 1,876.42 : x
  2. Step 2: Convert to fraction form
    5,163.40/7,746.72 = 1,876.42/x
  3. Step 3: Cross multiply
    5,163.40x = 7,746.72 × 1,876.42
  4. Step 4: Simplify right side
    5,163.40x = 14,536,100.34
  5. Step 5: Solve for x
    x = 14,536,100.34/5,163.40
  6. Step 6: Final answer
    x = 2,815.22

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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.