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Finding the Fourth Proportional to 7,171.78, 9,898.01 and 4,341.44

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Solution

The fourth proportional to 7,171.78, 9,898.01 and 4,341.44 is: 5,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.78 : 9,898.01 = 4,341.44 : x
  2. Step 2: Convert to fraction form
    7,171.78/9,898.01 = 4,341.44/x
  3. Step 3: Cross multiply
    7,171.78x = 9,898.01 × 4,341.44
  4. Step 4: Simplify right side
    7,171.78x = 42,971,616.53
  5. Step 5: Solve for x
    x = 42,971,616.53/7,171.78
  6. Step 6: Final answer
    x = 5,991.76

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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.