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Finding the Fourth Proportional to 5,262.88, 7,276.62 and 5,179.72

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Solution

The fourth proportional to 5,262.88, 7,276.62 and 5,179.72 is: 7,161.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,262.88 : 7,276.62 = 5,179.72 : x
  2. Step 2: Convert to fraction form
    5,262.88/7,276.62 = 5,179.72/x
  3. Step 3: Cross multiply
    5,262.88x = 7,276.62 × 5,179.72
  4. Step 4: Simplify right side
    5,262.88x = 37,690,854.15
  5. Step 5: Solve for x
    x = 37,690,854.15/5,262.88
  6. Step 6: Final answer
    x = 7,161.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.