Home / 5,080.61-7,620.86-1,382.81

Finding the Fourth Proportional to 5,080.61, 7,620.86 and 1,382.81

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Solution

The fourth proportional to 5,080.61, 7,620.86 and 1,382.81 is: 2,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,080.61 : 7,620.86 = 1,382.81 : x
  2. Step 2: Convert to fraction form
    5,080.61/7,620.86 = 1,382.81/x
  3. Step 3: Cross multiply
    5,080.61x = 7,620.86 × 1,382.81
  4. Step 4: Simplify right side
    5,080.61x = 10,538,166.77
  5. Step 5: Solve for x
    x = 10,538,166.77/5,080.61
  6. Step 6: Final answer
    x = 2,074.19

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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.