Home / 7,921.28-10,921.43-5,083.65

Finding the Fourth Proportional to 7,921.28, 10,921.43 and 5,083.65

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Solution

The fourth proportional to 7,921.28, 10,921.43 and 5,083.65 is: 7,009.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.28 : 10,921.43 = 5,083.65 : x
  2. Step 2: Convert to fraction form
    7,921.28/10,921.43 = 5,083.65/x
  3. Step 3: Cross multiply
    7,921.28x = 10,921.43 × 5,083.65
  4. Step 4: Simplify right side
    7,921.28x = 55,520,727.62
  5. Step 5: Solve for x
    x = 55,520,727.62/7,921.28
  6. Step 6: Final answer
    x = 7,009.06

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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.