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Finding the Fourth Proportional to 3,611.42, 4,980.64 and 2,352

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Solution

The fourth proportional to 3,611.42, 4,980.64 and 2,352 is: 3,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.42 : 4,980.64 = 2,352 : x
  2. Step 2: Convert to fraction form
    3,611.42/4,980.64 = 2,352/x
  3. Step 3: Cross multiply
    3,611.42x = 4,980.64 × 2,352
  4. Step 4: Simplify right side
    3,611.42x = 11,714,465.28
  5. Step 5: Solve for x
    x = 11,714,465.28/3,611.42
  6. Step 6: Final answer
    x = 3,243.73

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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.