Home / 1,915.54-2,871.39-1,338.26

Finding the Fourth Proportional to 1,915.54, 2,871.39 and 1,338.26

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Solution

The fourth proportional to 1,915.54, 2,871.39 and 1,338.26 is: 2,006.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.54 : 2,871.39 = 1,338.26 : x
  2. Step 2: Convert to fraction form
    1,915.54/2,871.39 = 1,338.26/x
  3. Step 3: Cross multiply
    1,915.54x = 2,871.39 × 1,338.26
  4. Step 4: Simplify right side
    1,915.54x = 3,842,666.38
  5. Step 5: Solve for x
    x = 3,842,666.38/1,915.54
  6. Step 6: Final answer
    x = 2,006.05

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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.