Home / 8,261.16-11,395.62-5,115.12

Finding the Fourth Proportional to 8,261.16, 11,395.62 and 5,115.12

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Solution

The fourth proportional to 8,261.16, 11,395.62 and 5,115.12 is: 7,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.16 : 11,395.62 = 5,115.12 : x
  2. Step 2: Convert to fraction form
    8,261.16/11,395.62 = 5,115.12/x
  3. Step 3: Cross multiply
    8,261.16x = 11,395.62 × 5,115.12
  4. Step 4: Simplify right side
    8,261.16x = 58,289,963.77
  5. Step 5: Solve for x
    x = 58,289,963.77/8,261.16
  6. Step 6: Final answer
    x = 7,055.91

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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.