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Finding the Fourth Proportional to 5,349.57, 7,382.58 and 2,991.69

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Solution

The fourth proportional to 5,349.57, 7,382.58 and 2,991.69 is: 4,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,349.57 : 7,382.58 = 2,991.69 : x
  2. Step 2: Convert to fraction form
    5,349.57/7,382.58 = 2,991.69/x
  3. Step 3: Cross multiply
    5,349.57x = 7,382.58 × 2,991.69
  4. Step 4: Simplify right side
    5,349.57x = 22,086,390.76
  5. Step 5: Solve for x
    x = 22,086,390.76/5,349.57
  6. Step 6: Final answer
    x = 4,128.63

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Half scale
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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.