Home / 4,115.78-5,679.77-2,347.38

Finding the Fourth Proportional to 4,115.78, 5,679.77 and 2,347.38

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Solution

The fourth proportional to 4,115.78, 5,679.77 and 2,347.38 is: 3,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.78 : 5,679.77 = 2,347.38 : x
  2. Step 2: Convert to fraction form
    4,115.78/5,679.77 = 2,347.38/x
  3. Step 3: Cross multiply
    4,115.78x = 5,679.77 × 2,347.38
  4. Step 4: Simplify right side
    4,115.78x = 13,332,588.06
  5. Step 5: Solve for x
    x = 13,332,588.06/4,115.78
  6. Step 6: Final answer
    x = 3,239.38

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Half scale
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Double scale
Find fourth proportional to 4,116.78, 5,681.14 and 2,348.38
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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.