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Finding the Fourth Proportional to 7,000.52, 10,500.80 and 1,806.80

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Solution

The fourth proportional to 7,000.52, 10,500.80 and 1,806.80 is: 2,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,000.52 : 10,500.80 = 1,806.80 : x
  2. Step 2: Convert to fraction form
    7,000.52/10,500.80 = 1,806.80/x
  3. Step 3: Cross multiply
    7,000.52x = 10,500.80 × 1,806.80
  4. Step 4: Simplify right side
    7,000.52x = 18,972,845.44
  5. Step 5: Solve for x
    x = 18,972,845.44/7,000.52
  6. Step 6: Final answer
    x = 2,710.21

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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.