Home / 8,172.19-11,276.13-5,338.81

Finding the Fourth Proportional to 8,172.19, 11,276.13 and 5,338.81

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Solution

The fourth proportional to 8,172.19, 11,276.13 and 5,338.81 is: 7,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.19 : 11,276.13 = 5,338.81 : x
  2. Step 2: Convert to fraction form
    8,172.19/11,276.13 = 5,338.81/x
  3. Step 3: Cross multiply
    8,172.19x = 11,276.13 × 5,338.81
  4. Step 4: Simplify right side
    8,172.19x = 60,201,115.61
  5. Step 5: Solve for x
    x = 60,201,115.61/8,172.19
  6. Step 6: Final answer
    x = 7,366.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.