Home / 8,145.12-11,241.48-5,161.24

Finding the Fourth Proportional to 8,145.12, 11,241.48 and 5,161.24

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Solution

The fourth proportional to 8,145.12, 11,241.48 and 5,161.24 is: 7,123.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.12 : 11,241.48 = 5,161.24 : x
  2. Step 2: Convert to fraction form
    8,145.12/11,241.48 = 5,161.24/x
  3. Step 3: Cross multiply
    8,145.12x = 11,241.48 × 5,161.24
  4. Step 4: Simplify right side
    8,145.12x = 58,019,917.38
  5. Step 5: Solve for x
    x = 58,019,917.38/8,145.12
  6. Step 6: Final answer
    x = 7,123.27

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Half scale
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Double scale
Find fourth proportional to 8,146.12, 11,242.86 and 5,162.24
Similar ratio
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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.