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Finding the Fourth Proportional to 8,873.68, 13,311.72 and 7,028.22

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Solution

The fourth proportional to 8,873.68, 13,311.72 and 7,028.22 is: 10,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,873.68 : 13,311.72 = 7,028.22 : x
  2. Step 2: Convert to fraction form
    8,873.68/13,311.72 = 7,028.22/x
  3. Step 3: Cross multiply
    8,873.68x = 13,311.72 × 7,028.22
  4. Step 4: Simplify right side
    8,873.68x = 93,557,696.74
  5. Step 5: Solve for x
    x = 93,557,696.74/8,873.68
  6. Step 6: Final answer
    x = 10,543.28

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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.