Home / 7,421.76-10,224.68-5,179.68

Finding the Fourth Proportional to 7,421.76, 10,224.68 and 5,179.68

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Solution

The fourth proportional to 7,421.76, 10,224.68 and 5,179.68 is: 7,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.76 : 10,224.68 = 5,179.68 : x
  2. Step 2: Convert to fraction form
    7,421.76/10,224.68 = 5,179.68/x
  3. Step 3: Cross multiply
    7,421.76x = 10,224.68 × 5,179.68
  4. Step 4: Simplify right side
    7,421.76x = 52,960,544.60
  5. Step 5: Solve for x
    x = 52,960,544.60/7,421.76
  6. Step 6: Final answer
    x = 7,135.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.