Home / 9,939.72-14,909.11-2,919.45

Finding the Fourth Proportional to 9,939.72, 14,909.11 and 2,919.45

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Solution

The fourth proportional to 9,939.72, 14,909.11 and 2,919.45 is: 4,379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.72 : 14,909.11 = 2,919.45 : x
  2. Step 2: Convert to fraction form
    9,939.72/14,909.11 = 2,919.45/x
  3. Step 3: Cross multiply
    9,939.72x = 14,909.11 × 2,919.45
  4. Step 4: Simplify right side
    9,939.72x = 43,526,393.89
  5. Step 5: Solve for x
    x = 43,526,393.89/9,939.72
  6. Step 6: Final answer
    x = 4,379.04

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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.