Home / 7,908.74-11,861.77-2,643.28

Finding the Fourth Proportional to 7,908.74, 11,861.77 and 2,643.28

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Solution

The fourth proportional to 7,908.74, 11,861.77 and 2,643.28 is: 3,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.74 : 11,861.77 = 2,643.28 : x
  2. Step 2: Convert to fraction form
    7,908.74/11,861.77 = 2,643.28/x
  3. Step 3: Cross multiply
    7,908.74x = 11,861.77 × 2,643.28
  4. Step 4: Simplify right side
    7,908.74x = 31,353,979.41
  5. Step 5: Solve for x
    x = 31,353,979.41/7,908.74
  6. Step 6: Final answer
    x = 3,964.47

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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.