Home / 7,122.74-10,688.69-3,838.12

Finding the Fourth Proportional to 7,122.74, 10,688.69 and 3,838.12

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Solution

The fourth proportional to 7,122.74, 10,688.69 and 3,838.12 is: 5,759.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.74 : 10,688.69 = 3,838.12 : x
  2. Step 2: Convert to fraction form
    7,122.74/10,688.69 = 3,838.12/x
  3. Step 3: Cross multiply
    7,122.74x = 10,688.69 × 3,838.12
  4. Step 4: Simplify right side
    7,122.74x = 41,024,457.74
  5. Step 5: Solve for x
    x = 41,024,457.74/7,122.74
  6. Step 6: Final answer
    x = 5,759.65

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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.