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Finding the Fourth Proportional to 3,298.52, 4,947 and 957.90

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Solution

The fourth proportional to 3,298.52, 4,947 and 957.90 is: 1,436.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,298.52 : 4,947 = 957.90 : x
  2. Step 2: Convert to fraction form
    3,298.52/4,947 = 957.90/x
  3. Step 3: Cross multiply
    3,298.52x = 4,947 × 957.90
  4. Step 4: Simplify right side
    3,298.52x = 4,738,731.30
  5. Step 5: Solve for x
    x = 4,738,731.30/3,298.52
  6. Step 6: Final answer
    x = 1,436.62

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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.