Home / 10,541.30-15,811.78-3,145.78

Finding the Fourth Proportional to 10,541.30, 15,811.78 and 3,145.78

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Solution

The fourth proportional to 10,541.30, 15,811.78 and 3,145.78 is: 4,718.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,541.30 : 15,811.78 = 3,145.78 : x
  2. Step 2: Convert to fraction form
    10,541.30/15,811.78 = 3,145.78/x
  3. Step 3: Cross multiply
    10,541.30x = 15,811.78 × 3,145.78
  4. Step 4: Simplify right side
    10,541.30x = 49,740,381.29
  5. Step 5: Solve for x
    x = 49,740,381.29/10,541.30
  6. Step 6: Final answer
    x = 4,718.62

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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.