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Finding the Fourth Proportional to 8,647.50, 12,980.49 and 3,719.58

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Solution

The fourth proportional to 8,647.50, 12,980.49 and 3,719.58 is: 5,583.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.50 : 12,980.49 = 3,719.58 : x
  2. Step 2: Convert to fraction form
    8,647.50/12,980.49 = 3,719.58/x
  3. Step 3: Cross multiply
    8,647.50x = 12,980.49 × 3,719.58
  4. Step 4: Simplify right side
    8,647.50x = 48,281,970.99
  5. Step 5: Solve for x
    x = 48,281,970.99/8,647.50
  6. Step 6: Final answer
    x = 5,583.34

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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.