Home / 1,918.28-2,647.49-1,478.66

Finding the Fourth Proportional to 1,918.28, 2,647.49 and 1,478.66

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Solution

The fourth proportional to 1,918.28, 2,647.49 and 1,478.66 is: 2,040.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.28 : 2,647.49 = 1,478.66 : x
  2. Step 2: Convert to fraction form
    1,918.28/2,647.49 = 1,478.66/x
  3. Step 3: Cross multiply
    1,918.28x = 2,647.49 × 1,478.66
  4. Step 4: Simplify right side
    1,918.28x = 3,914,716.93
  5. Step 5: Solve for x
    x = 3,914,716.93/1,918.28
  6. Step 6: Final answer
    x = 2,040.74

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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.