Home / 7,961.13-10,983.29-5,128.11

Finding the Fourth Proportional to 7,961.13, 10,983.29 and 5,128.11

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Solution

The fourth proportional to 7,961.13, 10,983.29 and 5,128.11 is: 7,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.13 : 10,983.29 = 5,128.11 : x
  2. Step 2: Convert to fraction form
    7,961.13/10,983.29 = 5,128.11/x
  3. Step 3: Cross multiply
    7,961.13x = 10,983.29 × 5,128.11
  4. Step 4: Simplify right side
    7,961.13x = 56,323,493.64
  5. Step 5: Solve for x
    x = 56,323,493.64/7,961.13
  6. Step 6: Final answer
    x = 7,074.81

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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.