Home / 5,111.78-7,667.67-1,649.03

Finding the Fourth Proportional to 5,111.78, 7,667.67 and 1,649.03

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Solution

The fourth proportional to 5,111.78, 7,667.67 and 1,649.03 is: 2,473.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.78 : 7,667.67 = 1,649.03 : x
  2. Step 2: Convert to fraction form
    5,111.78/7,667.67 = 1,649.03/x
  3. Step 3: Cross multiply
    5,111.78x = 7,667.67 × 1,649.03
  4. Step 4: Simplify right side
    5,111.78x = 12,644,217.86
  5. Step 5: Solve for x
    x = 12,644,217.86/5,111.78
  6. Step 6: Final answer
    x = 2,473.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.