Home / 12,752.86-19,130.40-3,987.82

Finding the Fourth Proportional to 12,752.86, 19,130.40 and 3,987.82

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Solution

The fourth proportional to 12,752.86, 19,130.40 and 3,987.82 is: 5,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,752.86 : 19,130.40 = 3,987.82 : x
  2. Step 2: Convert to fraction form
    12,752.86/19,130.40 = 3,987.82/x
  3. Step 3: Cross multiply
    12,752.86x = 19,130.40 × 3,987.82
  4. Step 4: Simplify right side
    12,752.86x = 76,288,591.73
  5. Step 5: Solve for x
    x = 76,288,591.73/12,752.86
  6. Step 6: Final answer
    x = 5,982.08

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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.