Home / 8,131.29-11,210.04-5,145.63

Finding the Fourth Proportional to 8,131.29, 11,210.04 and 5,145.63

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Solution

The fourth proportional to 8,131.29, 11,210.04 and 5,145.63 is: 7,093.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.29 : 11,210.04 = 5,145.63 : x
  2. Step 2: Convert to fraction form
    8,131.29/11,210.04 = 5,145.63/x
  3. Step 3: Cross multiply
    8,131.29x = 11,210.04 × 5,145.63
  4. Step 4: Simplify right side
    8,131.29x = 57,682,718.13
  5. Step 5: Solve for x
    x = 57,682,718.13/8,131.29
  6. Step 6: Final answer
    x = 7,093.92

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Half scale
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Double scale
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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.