Home / 7,681.26-11,512.53-3,981.45

Finding the Fourth Proportional to 7,681.26, 11,512.53 and 3,981.45

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Solution

The fourth proportional to 7,681.26, 11,512.53 and 3,981.45 is: 5,967.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.26 : 11,512.53 = 3,981.45 : x
  2. Step 2: Convert to fraction form
    7,681.26/11,512.53 = 3,981.45/x
  3. Step 3: Cross multiply
    7,681.26x = 11,512.53 × 3,981.45
  4. Step 4: Simplify right side
    7,681.26x = 45,836,562.57
  5. Step 5: Solve for x
    x = 45,836,562.57/7,681.26
  6. Step 6: Final answer
    x = 5,967.32

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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.