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Finding the Fourth Proportional to 4,985.75, 7,480.88 and 2,175.46

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Solution

The fourth proportional to 4,985.75, 7,480.88 and 2,175.46 is: 3,264.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.75 : 7,480.88 = 2,175.46 : x
  2. Step 2: Convert to fraction form
    4,985.75/7,480.88 = 2,175.46/x
  3. Step 3: Cross multiply
    4,985.75x = 7,480.88 × 2,175.46
  4. Step 4: Simplify right side
    4,985.75x = 16,274,333.78
  5. Step 5: Solve for x
    x = 16,274,333.78/4,985.75
  6. Step 6: Final answer
    x = 3,264.17

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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.