Home / 8,666.28-12,999.41-3,475.80

Finding the Fourth Proportional to 8,666.28, 12,999.41 and 3,475.80

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Solution

The fourth proportional to 8,666.28, 12,999.41 and 3,475.80 is: 5,213.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.28 : 12,999.41 = 3,475.80 : x
  2. Step 2: Convert to fraction form
    8,666.28/12,999.41 = 3,475.80/x
  3. Step 3: Cross multiply
    8,666.28x = 12,999.41 × 3,475.80
  4. Step 4: Simplify right side
    8,666.28x = 45,183,349.28
  5. Step 5: Solve for x
    x = 45,183,349.28/8,666.28
  6. Step 6: Final answer
    x = 5,213.70

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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.