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Finding the Fourth Proportional to 8,709.80, 13,052.95 and 4,751.33

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Solution

The fourth proportional to 8,709.80, 13,052.95 and 4,751.33 is: 7,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.80 : 13,052.95 = 4,751.33 : x
  2. Step 2: Convert to fraction form
    8,709.80/13,052.95 = 4,751.33/x
  3. Step 3: Cross multiply
    8,709.80x = 13,052.95 × 4,751.33
  4. Step 4: Simplify right side
    8,709.80x = 62,018,795.78
  5. Step 5: Solve for x
    x = 62,018,795.78/8,709.80
  6. Step 6: Final answer
    x = 7,120.58

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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.