Home / 7,145.16-10,724.70-3,450

Finding the Fourth Proportional to 7,145.16, 10,724.70 and 3,450

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Solution

The fourth proportional to 7,145.16, 10,724.70 and 3,450 is: 5,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.16 : 10,724.70 = 3,450 : x
  2. Step 2: Convert to fraction form
    7,145.16/10,724.70 = 3,450/x
  3. Step 3: Cross multiply
    7,145.16x = 10,724.70 × 3,450
  4. Step 4: Simplify right side
    7,145.16x = 37,000,215
  5. Step 5: Solve for x
    x = 37,000,215/7,145.16
  6. Step 6: Final answer
    x = 5,178.36

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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.