Home / 10,386.92-15,579.87-3,812.61

Finding the Fourth Proportional to 10,386.92, 15,579.87 and 3,812.61

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Solution

The fourth proportional to 10,386.92, 15,579.87 and 3,812.61 is: 5,718.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386.92 : 15,579.87 = 3,812.61 : x
  2. Step 2: Convert to fraction form
    10,386.92/15,579.87 = 3,812.61/x
  3. Step 3: Cross multiply
    10,386.92x = 15,579.87 × 3,812.61
  4. Step 4: Simplify right side
    10,386.92x = 59,399,968.16
  5. Step 5: Solve for x
    x = 59,399,968.16/10,386.92
  6. Step 6: Final answer
    x = 5,718.73

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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.