Home / 7,981.76-11,973.12-2,435.48

Finding the Fourth Proportional to 7,981.76, 11,973.12 and 2,435.48

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Solution

The fourth proportional to 7,981.76, 11,973.12 and 2,435.48 is: 3,653.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.76 : 11,973.12 = 2,435.48 : x
  2. Step 2: Convert to fraction form
    7,981.76/11,973.12 = 2,435.48/x
  3. Step 3: Cross multiply
    7,981.76x = 11,973.12 × 2,435.48
  4. Step 4: Simplify right side
    7,981.76x = 29,160,294.30
  5. Step 5: Solve for x
    x = 29,160,294.30/7,981.76
  6. Step 6: Final answer
    x = 3,653.37

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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.