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Finding the Fourth Proportional to 2,302.90, 3,453 and 985.70

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Solution

The fourth proportional to 2,302.90, 3,453 and 985.70 is: 1,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,302.90 : 3,453 = 985.70 : x
  2. Step 2: Convert to fraction form
    2,302.90/3,453 = 985.70/x
  3. Step 3: Cross multiply
    2,302.90x = 3,453 × 985.70
  4. Step 4: Simplify right side
    2,302.90x = 3,403,622.10
  5. Step 5: Solve for x
    x = 3,403,622.10/2,302.90
  6. Step 6: Final answer
    x = 1,477.97

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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.