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Finding the Fourth Proportional to 1,942.02, 2,913.04 and 709.43

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Solution

The fourth proportional to 1,942.02, 2,913.04 and 709.43 is: 1,064.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.02 : 2,913.04 = 709.43 : x
  2. Step 2: Convert to fraction form
    1,942.02/2,913.04 = 709.43/x
  3. Step 3: Cross multiply
    1,942.02x = 2,913.04 × 709.43
  4. Step 4: Simplify right side
    1,942.02x = 2,066,597.97
  5. Step 5: Solve for x
    x = 2,066,597.97/1,942.02
  6. Step 6: Final answer
    x = 1,064.15

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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.