Home / 7,828.16-10,805.80-5,179.18

Finding the Fourth Proportional to 7,828.16, 10,805.80 and 5,179.18

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Solution

The fourth proportional to 7,828.16, 10,805.80 and 5,179.18 is: 7,149.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.16 : 10,805.80 = 5,179.18 : x
  2. Step 2: Convert to fraction form
    7,828.16/10,805.80 = 5,179.18/x
  3. Step 3: Cross multiply
    7,828.16x = 10,805.80 × 5,179.18
  4. Step 4: Simplify right side
    7,828.16x = 55,965,183.24
  5. Step 5: Solve for x
    x = 55,965,183.24/7,828.16
  6. Step 6: Final answer
    x = 7,149.21

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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.