Home / 8,665.09-13,000.20-3,118.30

Finding the Fourth Proportional to 8,665.09, 13,000.20 and 3,118.30

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Solution

The fourth proportional to 8,665.09, 13,000.20 and 3,118.30 is: 4,678.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.09 : 13,000.20 = 3,118.30 : x
  2. Step 2: Convert to fraction form
    8,665.09/13,000.20 = 3,118.30/x
  3. Step 3: Cross multiply
    8,665.09x = 13,000.20 × 3,118.30
  4. Step 4: Simplify right side
    8,665.09x = 40,538,523.66
  5. Step 5: Solve for x
    x = 40,538,523.66/8,665.09
  6. Step 6: Final answer
    x = 4,678.37

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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.