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Finding the Fourth Proportional to 3,275.72, 4,913.80 and 1,611.44

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Solution

The fourth proportional to 3,275.72, 4,913.80 and 1,611.44 is: 2,417.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,275.72 : 4,913.80 = 1,611.44 : x
  2. Step 2: Convert to fraction form
    3,275.72/4,913.80 = 1,611.44/x
  3. Step 3: Cross multiply
    3,275.72x = 4,913.80 × 1,611.44
  4. Step 4: Simplify right side
    3,275.72x = 7,918,293.87
  5. Step 5: Solve for x
    x = 7,918,293.87/3,275.72
  6. Step 6: Final answer
    x = 2,417.27

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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.