Home / 1,326.68-1,982.40-1,012.60

Finding the Fourth Proportional to 1,326.68, 1,982.40 and 1,012.60

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Solution

The fourth proportional to 1,326.68, 1,982.40 and 1,012.60 is: 1,513.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.68 : 1,982.40 = 1,012.60 : x
  2. Step 2: Convert to fraction form
    1,326.68/1,982.40 = 1,012.60/x
  3. Step 3: Cross multiply
    1,326.68x = 1,982.40 × 1,012.60
  4. Step 4: Simplify right side
    1,326.68x = 2,007,379.77
  5. Step 5: Solve for x
    x = 2,007,379.77/1,326.68
  6. Step 6: Final answer
    x = 1,513.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.