Home / 7,828.40-10,806.14-5,179.44

Finding the Fourth Proportional to 7,828.40, 10,806.14 and 5,179.44

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Solution

The fourth proportional to 7,828.40, 10,806.14 and 5,179.44 is: 7,149.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.40 : 10,806.14 = 5,179.44 : x
  2. Step 2: Convert to fraction form
    7,828.40/10,806.14 = 5,179.44/x
  3. Step 3: Cross multiply
    7,828.40x = 10,806.14 × 5,179.44
  4. Step 4: Simplify right side
    7,828.40x = 55,969,753.76
  5. Step 5: Solve for x
    x = 55,969,753.76/7,828.40
  6. Step 6: Final answer
    x = 7,149.58

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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.