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Finding the Fourth Proportional to 3,097, 4,276.02 and 2,166.76

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Solution

The fourth proportional to 3,097, 4,276.02 and 2,166.76 is: 2,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,097 : 4,276.02 = 2,166.76 : x
  2. Step 2: Convert to fraction form
    3,097/4,276.02 = 2,166.76/x
  3. Step 3: Cross multiply
    3,097x = 4,276.02 × 2,166.76
  4. Step 4: Simplify right side
    3,097x = 9,265,109.10
  5. Step 5: Solve for x
    x = 9,265,109.10/3,097
  6. Step 6: Final answer
    x = 2,991.64

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Double 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.