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Finding the Fourth Proportional to 3,942.05, 5,913.07 and 1,345.01

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Solution

The fourth proportional to 3,942.05, 5,913.07 and 1,345.01 is: 2,017.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.05 : 5,913.07 = 1,345.01 : x
  2. Step 2: Convert to fraction form
    3,942.05/5,913.07 = 1,345.01/x
  3. Step 3: Cross multiply
    3,942.05x = 5,913.07 × 1,345.01
  4. Step 4: Simplify right side
    3,942.05x = 7,953,105.35
  5. Step 5: Solve for x
    x = 7,953,105.35/3,942.05
  6. Step 6: Final answer
    x = 2,017.51

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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.