Home / 10,516.28-15,771.72-3,119.06

Finding the Fourth Proportional to 10,516.28, 15,771.72 and 3,119.06

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Solution

The fourth proportional to 10,516.28, 15,771.72 and 3,119.06 is: 4,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,516.28 : 15,771.72 = 3,119.06 : x
  2. Step 2: Convert to fraction form
    10,516.28/15,771.72 = 3,119.06/x
  3. Step 3: Cross multiply
    10,516.28x = 15,771.72 × 3,119.06
  4. Step 4: Simplify right side
    10,516.28x = 49,192,980.41
  5. Step 5: Solve for x
    x = 49,192,980.41/10,516.28
  6. Step 6: Final answer
    x = 4,677.79

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1.5x scale

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.