Home / 10,877.85-16,316.78-2,979.78

Finding the Fourth Proportional to 10,877.85, 16,316.78 and 2,979.78

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Solution

The fourth proportional to 10,877.85, 16,316.78 and 2,979.78 is: 4,469.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.85 : 16,316.78 = 2,979.78 : x
  2. Step 2: Convert to fraction form
    10,877.85/16,316.78 = 2,979.78/x
  3. Step 3: Cross multiply
    10,877.85x = 16,316.78 × 2,979.78
  4. Step 4: Simplify right side
    10,877.85x = 48,620,399.81
  5. Step 5: Solve for x
    x = 48,620,399.81/10,877.85
  6. Step 6: Final answer
    x = 4,469.67

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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.