Home / 5,087.20-7,631.74-2,315.20

Finding the Fourth Proportional to 5,087.20, 7,631.74 and 2,315.20

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Solution

The fourth proportional to 5,087.20, 7,631.74 and 2,315.20 is: 3,473.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.20 : 7,631.74 = 2,315.20 : x
  2. Step 2: Convert to fraction form
    5,087.20/7,631.74 = 2,315.20/x
  3. Step 3: Cross multiply
    5,087.20x = 7,631.74 × 2,315.20
  4. Step 4: Simplify right side
    5,087.20x = 17,669,004.45
  5. Step 5: Solve for x
    x = 17,669,004.45/5,087.20
  6. Step 6: Final answer
    x = 3,473.23

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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.