Home / 7,772.43-11,656.51-2,148.75

Finding the Fourth Proportional to 7,772.43, 11,656.51 and 2,148.75

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Solution

The fourth proportional to 7,772.43, 11,656.51 and 2,148.75 is: 3,222.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.43 : 11,656.51 = 2,148.75 : x
  2. Step 2: Convert to fraction form
    7,772.43/11,656.51 = 2,148.75/x
  3. Step 3: Cross multiply
    7,772.43x = 11,656.51 × 2,148.75
  4. Step 4: Simplify right side
    7,772.43x = 25,046,925.86
  5. Step 5: Solve for x
    x = 25,046,925.86/7,772.43
  6. Step 6: Final answer
    x = 3,222.53

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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.