Home / 1,942.13-2,912.90-1,065.07

Finding the Fourth Proportional to 1,942.13, 2,912.90 and 1,065.07

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Solution

The fourth proportional to 1,942.13, 2,912.90 and 1,065.07 is: 1,597.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.13 : 2,912.90 = 1,065.07 : x
  2. Step 2: Convert to fraction form
    1,942.13/2,912.90 = 1,065.07/x
  3. Step 3: Cross multiply
    1,942.13x = 2,912.90 × 1,065.07
  4. Step 4: Simplify right side
    1,942.13x = 3,102,442.40
  5. Step 5: Solve for x
    x = 3,102,442.40/1,942.13
  6. Step 6: Final answer
    x = 1,597.44

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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.