Home / 7,921.13-10,921.21-5,083.49

Finding the Fourth Proportional to 7,921.13, 10,921.21 and 5,083.49

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Solution

The fourth proportional to 7,921.13, 10,921.21 and 5,083.49 is: 7,008.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.13 : 10,921.21 = 5,083.49 : x
  2. Step 2: Convert to fraction form
    7,921.13/10,921.21 = 5,083.49/x
  3. Step 3: Cross multiply
    7,921.13x = 10,921.21 × 5,083.49
  4. Step 4: Simplify right side
    7,921.13x = 55,517,876.42
  5. Step 5: Solve for x
    x = 55,517,876.42/7,921.13
  6. Step 6: Final answer
    x = 7,008.84

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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.