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Finding the Fourth Proportional to 5,611.88, 8,418.15 and 1,716.32

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Solution

The fourth proportional to 5,611.88, 8,418.15 and 1,716.32 is: 2,574.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.88 : 8,418.15 = 1,716.32 : x
  2. Step 2: Convert to fraction form
    5,611.88/8,418.15 = 1,716.32/x
  3. Step 3: Cross multiply
    5,611.88x = 8,418.15 × 1,716.32
  4. Step 4: Simplify right side
    5,611.88x = 14,448,197.12
  5. Step 5: Solve for x
    x = 14,448,197.12/5,611.88
  6. Step 6: Final answer
    x = 2,574.58

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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.