Home / 7,120.89-10,684.68-4,487.79

Finding the Fourth Proportional to 7,120.89, 10,684.68 and 4,487.79

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Solution

The fourth proportional to 7,120.89, 10,684.68 and 4,487.79 is: 6,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.89 : 10,684.68 = 4,487.79 : x
  2. Step 2: Convert to fraction form
    7,120.89/10,684.68 = 4,487.79/x
  3. Step 3: Cross multiply
    7,120.89x = 10,684.68 × 4,487.79
  4. Step 4: Simplify right side
    7,120.89x = 47,950,600.06
  5. Step 5: Solve for x
    x = 47,950,600.06/7,120.89
  6. Step 6: Final answer
    x = 6,733.79

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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.