Home / 7,920.72-11,885.21-5,747.38

Finding the Fourth Proportional to 7,920.72, 11,885.21 and 5,747.38

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Solution

The fourth proportional to 7,920.72, 11,885.21 and 5,747.38 is: 8,624.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.72 : 11,885.21 = 5,747.38 : x
  2. Step 2: Convert to fraction form
    7,920.72/11,885.21 = 5,747.38/x
  3. Step 3: Cross multiply
    7,920.72x = 11,885.21 × 5,747.38
  4. Step 4: Simplify right side
    7,920.72x = 68,308,818.25
  5. Step 5: Solve for x
    x = 68,308,818.25/7,920.72
  6. Step 6: Final answer
    x = 8,624.07

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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.