Home / 1,394.46-2,089.83-1,247.28

Finding the Fourth Proportional to 1,394.46, 2,089.83 and 1,247.28

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Solution

The fourth proportional to 1,394.46, 2,089.83 and 1,247.28 is: 1,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.46 : 2,089.83 = 1,247.28 : x
  2. Step 2: Convert to fraction form
    1,394.46/2,089.83 = 1,247.28/x
  3. Step 3: Cross multiply
    1,394.46x = 2,089.83 × 1,247.28
  4. Step 4: Simplify right side
    1,394.46x = 2,606,603.16
  5. Step 5: Solve for x
    x = 2,606,603.16/1,394.46
  6. Step 6: Final answer
    x = 1,869.26

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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.