Home / 7,438.21-11,161.58-2,997.91

Finding the Fourth Proportional to 7,438.21, 11,161.58 and 2,997.91

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Solution

The fourth proportional to 7,438.21, 11,161.58 and 2,997.91 is: 4,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.21 : 11,161.58 = 2,997.91 : x
  2. Step 2: Convert to fraction form
    7,438.21/11,161.58 = 2,997.91/x
  3. Step 3: Cross multiply
    7,438.21x = 11,161.58 × 2,997.91
  4. Step 4: Simplify right side
    7,438.21x = 33,461,428.12
  5. Step 5: Solve for x
    x = 33,461,428.12/7,438.21
  6. Step 6: Final answer
    x = 4,498.58

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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.