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Finding the Fourth Proportional to 5,440.74, 7,451.97 and 5,121.58

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Solution

The fourth proportional to 5,440.74, 7,451.97 and 5,121.58 is: 7,014.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440.74 : 7,451.97 = 5,121.58 : x
  2. Step 2: Convert to fraction form
    5,440.74/7,451.97 = 5,121.58/x
  3. Step 3: Cross multiply
    5,440.74x = 7,451.97 × 5,121.58
  4. Step 4: Simplify right side
    5,440.74x = 38,165,860.51
  5. Step 5: Solve for x
    x = 38,165,860.51/5,440.74
  6. Step 6: Final answer
    x = 7,014.83

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.