Home / 10,386.87-15,579.78-3,812.54

Finding the Fourth Proportional to 10,386.87, 15,579.78 and 3,812.54

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Solution

The fourth proportional to 10,386.87, 15,579.78 and 3,812.54 is: 5,718.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386.87 : 15,579.78 = 3,812.54 : x
  2. Step 2: Convert to fraction form
    10,386.87/15,579.78 = 3,812.54/x
  3. Step 3: Cross multiply
    10,386.87x = 15,579.78 × 3,812.54
  4. Step 4: Simplify right side
    10,386.87x = 59,398,505.02
  5. Step 5: Solve for x
    x = 59,398,505.02/10,386.87
  6. Step 6: Final answer
    x = 5,718.62

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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.