Home / 7,987.86-11,022.85-4,451.38

Finding the Fourth Proportional to 7,987.86, 11,022.85 and 4,451.38

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Solution

The fourth proportional to 7,987.86, 11,022.85 and 4,451.38 is: 6,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.86 : 11,022.85 = 4,451.38 : x
  2. Step 2: Convert to fraction form
    7,987.86/11,022.85 = 4,451.38/x
  3. Step 3: Cross multiply
    7,987.86x = 11,022.85 × 4,451.38
  4. Step 4: Simplify right side
    7,987.86x = 49,066,894.03
  5. Step 5: Solve for x
    x = 49,066,894.03/7,987.86
  6. Step 6: Final answer
    x = 6,142.68

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.