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Finding the Fourth Proportional to 3,599.88, 5,420.88 and 3,143.04

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Solution

The fourth proportional to 3,599.88, 5,420.88 and 3,143.04 is: 4,732.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,599.88 : 5,420.88 = 3,143.04 : x
  2. Step 2: Convert to fraction form
    3,599.88/5,420.88 = 3,143.04/x
  3. Step 3: Cross multiply
    3,599.88x = 5,420.88 × 3,143.04
  4. Step 4: Simplify right side
    3,599.88x = 17,038,042.68
  5. Step 5: Solve for x
    x = 17,038,042.68/3,599.88
  6. Step 6: Final answer
    x = 4,732.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.