Home / 5,087.20-7,623.50-2,891.28

Finding the Fourth Proportional to 5,087.20, 7,623.50 and 2,891.28

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Solution

The fourth proportional to 5,087.20, 7,623.50 and 2,891.28 is: 4,332.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.20 : 7,623.50 = 2,891.28 : x
  2. Step 2: Convert to fraction form
    5,087.20/7,623.50 = 2,891.28/x
  3. Step 3: Cross multiply
    5,087.20x = 7,623.50 × 2,891.28
  4. Step 4: Simplify right side
    5,087.20x = 22,041,673.08
  5. Step 5: Solve for x
    x = 22,041,673.08/5,087.20
  6. Step 6: Final answer
    x = 4,332.77

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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.