Home / 1,378.16-2,063.14-914.33

Finding the Fourth Proportional to 1,378.16, 2,063.14 and 914.33

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Solution

The fourth proportional to 1,378.16, 2,063.14 and 914.33 is: 1,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.16 : 2,063.14 = 914.33 : x
  2. Step 2: Convert to fraction form
    1,378.16/2,063.14 = 914.33/x
  3. Step 3: Cross multiply
    1,378.16x = 2,063.14 × 914.33
  4. Step 4: Simplify right side
    1,378.16x = 1,886,391.38
  5. Step 5: Solve for x
    x = 1,886,391.38/1,378.16
  6. Step 6: Final answer
    x = 1,368.78

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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.