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Finding the Fourth Proportional to 3,313.68, 4,972.08 and 1,670.40

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Solution

The fourth proportional to 3,313.68, 4,972.08 and 1,670.40 is: 2,506.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.68 : 4,972.08 = 1,670.40 : x
  2. Step 2: Convert to fraction form
    3,313.68/4,972.08 = 1,670.40/x
  3. Step 3: Cross multiply
    3,313.68x = 4,972.08 × 1,670.40
  4. Step 4: Simplify right side
    3,313.68x = 8,305,362.43
  5. Step 5: Solve for x
    x = 8,305,362.43/3,313.68
  6. Step 6: Final answer
    x = 2,506.39

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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.