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Finding the Fourth Proportional to 1,942.46, 2,913.92 and 710.45

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Solution

The fourth proportional to 1,942.46, 2,913.92 and 710.45 is: 1,065.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.46 : 2,913.92 = 710.45 : x
  2. Step 2: Convert to fraction form
    1,942.46/2,913.92 = 710.45/x
  3. Step 3: Cross multiply
    1,942.46x = 2,913.92 × 710.45
  4. Step 4: Simplify right side
    1,942.46x = 2,070,176.34
  5. Step 5: Solve for x
    x = 2,070,176.34/1,942.46
  6. Step 6: Final answer
    x = 1,065.75

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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.