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Finding the Fourth Proportional to 2,891.04, 3,989.52 and 1,712.64

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Solution

The fourth proportional to 2,891.04, 3,989.52 and 1,712.64 is: 2,363.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.04 : 3,989.52 = 1,712.64 : x
  2. Step 2: Convert to fraction form
    2,891.04/3,989.52 = 1,712.64/x
  3. Step 3: Cross multiply
    2,891.04x = 3,989.52 × 1,712.64
  4. Step 4: Simplify right side
    2,891.04x = 6,832,611.53
  5. Step 5: Solve for x
    x = 6,832,611.53/2,891.04
  6. Step 6: Final answer
    x = 2,363.37

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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.