Home / 7,920.21-10,929.46-4,516.72

Finding the Fourth Proportional to 7,920.21, 10,929.46 and 4,516.72

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Solution

The fourth proportional to 7,920.21, 10,929.46 and 4,516.72 is: 6,232.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.21 : 10,929.46 = 4,516.72 : x
  2. Step 2: Convert to fraction form
    7,920.21/10,929.46 = 4,516.72/x
  3. Step 3: Cross multiply
    7,920.21x = 10,929.46 × 4,516.72
  4. Step 4: Simplify right side
    7,920.21x = 49,365,363.62
  5. Step 5: Solve for x
    x = 49,365,363.62/7,920.21
  6. Step 6: Final answer
    x = 6,232.83

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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.