Home / 8,111.66-11,186.57-5,122.28

Finding the Fourth Proportional to 8,111.66, 11,186.57 and 5,122.28

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Solution

The fourth proportional to 8,111.66, 11,186.57 and 5,122.28 is: 7,064.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.66 : 11,186.57 = 5,122.28 : x
  2. Step 2: Convert to fraction form
    8,111.66/11,186.57 = 5,122.28/x
  3. Step 3: Cross multiply
    8,111.66x = 11,186.57 × 5,122.28
  4. Step 4: Simplify right side
    8,111.66x = 57,300,784.55
  5. Step 5: Solve for x
    x = 57,300,784.55/8,111.66
  6. Step 6: Final answer
    x = 7,064.01

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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.