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Finding the Fourth Proportional to 5,643.30, 8,458.95 and 2,719.70

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Solution

The fourth proportional to 5,643.30, 8,458.95 and 2,719.70 is: 4,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.30 : 8,458.95 = 2,719.70 : x
  2. Step 2: Convert to fraction form
    5,643.30/8,458.95 = 2,719.70/x
  3. Step 3: Cross multiply
    5,643.30x = 8,458.95 × 2,719.70
  4. Step 4: Simplify right side
    5,643.30x = 23,005,806.32
  5. Step 5: Solve for x
    x = 23,005,806.32/5,643.30
  6. Step 6: Final answer
    x = 4,076.66

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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.