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Finding the Fourth Proportional to 1,341.07, 2,012.13 and 519.12

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Solution

The fourth proportional to 1,341.07, 2,012.13 and 519.12 is: 778.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.07 : 2,012.13 = 519.12 : x
  2. Step 2: Convert to fraction form
    1,341.07/2,012.13 = 519.12/x
  3. Step 3: Cross multiply
    1,341.07x = 2,012.13 × 519.12
  4. Step 4: Simplify right side
    1,341.07x = 1,044,536.93
  5. Step 5: Solve for x
    x = 1,044,536.93/1,341.07
  6. Step 6: Final answer
    x = 778.88

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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.