Home / 7,415.86-11,123.79-2,221.73

Finding the Fourth Proportional to 7,415.86, 11,123.79 and 2,221.73

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Solution

The fourth proportional to 7,415.86, 11,123.79 and 2,221.73 is: 3,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.86 : 11,123.79 = 2,221.73 : x
  2. Step 2: Convert to fraction form
    7,415.86/11,123.79 = 2,221.73/x
  3. Step 3: Cross multiply
    7,415.86x = 11,123.79 × 2,221.73
  4. Step 4: Simplify right side
    7,415.86x = 24,714,110.79
  5. Step 5: Solve for x
    x = 24,714,110.79/7,415.86
  6. Step 6: Final answer
    x = 3,332.60

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