Home / 7,891.28-11,836.36-2,697.20

Finding the Fourth Proportional to 7,891.28, 11,836.36 and 2,697.20

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Solution

The fourth proportional to 7,891.28, 11,836.36 and 2,697.20 is: 4,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.28 : 11,836.36 = 2,697.20 : x
  2. Step 2: Convert to fraction form
    7,891.28/11,836.36 = 2,697.20/x
  3. Step 3: Cross multiply
    7,891.28x = 11,836.36 × 2,697.20
  4. Step 4: Simplify right side
    7,891.28x = 31,925,030.19
  5. Step 5: Solve for x
    x = 31,925,030.19/7,891.28
  6. Step 6: Final answer
    x = 4,045.61

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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.