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Finding the Fourth Proportional to 1,894.32, 2,611.92 and 1,230.24

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Solution

The fourth proportional to 1,894.32, 2,611.92 and 1,230.24 is: 1,696.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.32 : 2,611.92 = 1,230.24 : x
  2. Step 2: Convert to fraction form
    1,894.32/2,611.92 = 1,230.24/x
  3. Step 3: Cross multiply
    1,894.32x = 2,611.92 × 1,230.24
  4. Step 4: Simplify right side
    1,894.32x = 3,213,288.46
  5. Step 5: Solve for x
    x = 3,213,288.46/1,894.32
  6. Step 6: Final answer
    x = 1,696.28

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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.