Home / 7,989.76-11,981.56-2,365.88

Finding the Fourth Proportional to 7,989.76, 11,981.56 and 2,365.88

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Solution

The fourth proportional to 7,989.76, 11,981.56 and 2,365.88 is: 3,547.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.76 : 11,981.56 = 2,365.88 : x
  2. Step 2: Convert to fraction form
    7,989.76/11,981.56 = 2,365.88/x
  3. Step 3: Cross multiply
    7,989.76x = 11,981.56 × 2,365.88
  4. Step 4: Simplify right side
    7,989.76x = 28,346,933.17
  5. Step 5: Solve for x
    x = 28,346,933.17/7,989.76
  6. Step 6: Final answer
    x = 3,547.91

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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.