Home / 7,910.40-10,911.68-4,926.72

Finding the Fourth Proportional to 7,910.40, 10,911.68 and 4,926.72

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Solution

The fourth proportional to 7,910.40, 10,911.68 and 4,926.72 is: 6,795.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.40 : 10,911.68 = 4,926.72 : x
  2. Step 2: Convert to fraction form
    7,910.40/10,911.68 = 4,926.72/x
  3. Step 3: Cross multiply
    7,910.40x = 10,911.68 × 4,926.72
  4. Step 4: Simplify right side
    7,910.40x = 53,758,792.09
  5. Step 5: Solve for x
    x = 53,758,792.09/7,910.40
  6. Step 6: Final answer
    x = 6,795.96

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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.