Home / 1,909.24-2,863.30-985.08

Finding the Fourth Proportional to 1,909.24, 2,863.30 and 985.08

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Solution

The fourth proportional to 1,909.24, 2,863.30 and 985.08 is: 1,477.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.24 : 2,863.30 = 985.08 : x
  2. Step 2: Convert to fraction form
    1,909.24/2,863.30 = 985.08/x
  3. Step 3: Cross multiply
    1,909.24x = 2,863.30 × 985.08
  4. Step 4: Simplify right side
    1,909.24x = 2,820,573.58
  5. Step 5: Solve for x
    x = 2,820,573.58/1,909.24
  6. Step 6: Final answer
    x = 1,477.33

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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.