Home / 1,397.14-1,928.30-1,064.94

Finding the Fourth Proportional to 1,397.14, 1,928.30 and 1,064.94

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Solution

The fourth proportional to 1,397.14, 1,928.30 and 1,064.94 is: 1,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.14 : 1,928.30 = 1,064.94 : x
  2. Step 2: Convert to fraction form
    1,397.14/1,928.30 = 1,064.94/x
  3. Step 3: Cross multiply
    1,397.14x = 1,928.30 × 1,064.94
  4. Step 4: Simplify right side
    1,397.14x = 2,053,523.80
  5. Step 5: Solve for x
    x = 2,053,523.80/1,397.14
  6. Step 6: Final answer
    x = 1,469.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.