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Finding the Fourth Proportional to 3,275.36, 4,520 and 1,878

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Solution

The fourth proportional to 3,275.36, 4,520 and 1,878 is: 2,591.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,275.36 : 4,520 = 1,878 : x
  2. Step 2: Convert to fraction form
    3,275.36/4,520 = 1,878/x
  3. Step 3: Cross multiply
    3,275.36x = 4,520 × 1,878
  4. Step 4: Simplify right side
    3,275.36x = 8,488,560
  5. Step 5: Solve for x
    x = 8,488,560/3,275.36
  6. Step 6: Final answer
    x = 2,591.64

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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.