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Finding the Fourth Proportional to 8,643.30, 12,964.95 and 2,800.37

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Solution

The fourth proportional to 8,643.30, 12,964.95 and 2,800.37 is: 4,200.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.30 : 12,964.95 = 2,800.37 : x
  2. Step 2: Convert to fraction form
    8,643.30/12,964.95 = 2,800.37/x
  3. Step 3: Cross multiply
    8,643.30x = 12,964.95 × 2,800.37
  4. Step 4: Simplify right side
    8,643.30x = 36,306,592.21
  5. Step 5: Solve for x
    x = 36,306,592.21/8,643.30
  6. Step 6: Final answer
    x = 4,200.55

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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.