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Finding the Fourth Proportional to 7,775.52, 11,661.30 and 2,228.88

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Solution

The fourth proportional to 7,775.52, 11,661.30 and 2,228.88 is: 3,342.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.52 : 11,661.30 = 2,228.88 : x
  2. Step 2: Convert to fraction form
    7,775.52/11,661.30 = 2,228.88/x
  3. Step 3: Cross multiply
    7,775.52x = 11,661.30 × 2,228.88
  4. Step 4: Simplify right side
    7,775.52x = 25,991,638.34
  5. Step 5: Solve for x
    x = 25,991,638.34/7,775.52
  6. Step 6: Final answer
    x = 3,342.75

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1.5x scale

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.