Home / 1,913.58-2,866.68-1,327.38

Finding the Fourth Proportional to 1,913.58, 2,866.68 and 1,327.38

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Solution

The fourth proportional to 1,913.58, 2,866.68 and 1,327.38 is: 1,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.58 : 2,866.68 = 1,327.38 : x
  2. Step 2: Convert to fraction form
    1,913.58/2,866.68 = 1,327.38/x
  3. Step 3: Cross multiply
    1,913.58x = 2,866.68 × 1,327.38
  4. Step 4: Simplify right side
    1,913.58x = 3,805,173.70
  5. Step 5: Solve for x
    x = 3,805,173.70/1,913.58
  6. Step 6: Final answer
    x = 1,988.51

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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.