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Finding the Fourth Proportional to 2,932.90, 4,399.35 and 985.09

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Solution

The fourth proportional to 2,932.90, 4,399.35 and 985.09 is: 1,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,932.90 : 4,399.35 = 985.09 : x
  2. Step 2: Convert to fraction form
    2,932.90/4,399.35 = 985.09/x
  3. Step 3: Cross multiply
    2,932.90x = 4,399.35 × 985.09
  4. Step 4: Simplify right side
    2,932.90x = 4,333,755.69
  5. Step 5: Solve for x
    x = 4,333,755.69/2,932.90
  6. Step 6: Final answer
    x = 1,477.64

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1.5x scale

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.