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Finding the Fourth Proportional to 7,252.52, 10,878.79 and 1,987.58

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Solution

The fourth proportional to 7,252.52, 10,878.79 and 1,987.58 is: 2,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,252.52 : 10,878.79 = 1,987.58 : x
  2. Step 2: Convert to fraction form
    7,252.52/10,878.79 = 1,987.58/x
  3. Step 3: Cross multiply
    7,252.52x = 10,878.79 × 1,987.58
  4. Step 4: Simplify right side
    7,252.52x = 21,622,465.43
  5. Step 5: Solve for x
    x = 21,622,465.43/7,252.52
  6. Step 6: Final answer
    x = 2,981.37

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Similar ratio
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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.