Home / 1,319.49-1,968.30-1,217.43

Finding the Fourth Proportional to 1,319.49, 1,968.30 and 1,217.43

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Solution

The fourth proportional to 1,319.49, 1,968.30 and 1,217.43 is: 1,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.49 : 1,968.30 = 1,217.43 : x
  2. Step 2: Convert to fraction form
    1,319.49/1,968.30 = 1,217.43/x
  3. Step 3: Cross multiply
    1,319.49x = 1,968.30 × 1,217.43
  4. Step 4: Simplify right side
    1,319.49x = 2,396,267.47
  5. Step 5: Solve for x
    x = 2,396,267.47/1,319.49
  6. Step 6: Final answer
    x = 1,816.06

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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.