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Finding the Fourth Proportional to 8,871.30, 13,309.38 and 7,028.58

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Solution

The fourth proportional to 8,871.30, 13,309.38 and 7,028.58 is: 10,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.30 : 13,309.38 = 7,028.58 : x
  2. Step 2: Convert to fraction form
    8,871.30/13,309.38 = 7,028.58/x
  3. Step 3: Cross multiply
    8,871.30x = 13,309.38 × 7,028.58
  4. Step 4: Simplify right side
    8,871.30x = 93,546,042.08
  5. Step 5: Solve for x
    x = 93,546,042.08/8,871.30
  6. Step 6: Final answer
    x = 10,544.80

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1.5x scale

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.