Home / 1,209.30-1,664.74-1,084.92

Finding the Fourth Proportional to 1,209.30, 1,664.74 and 1,084.92

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Solution

The fourth proportional to 1,209.30, 1,664.74 and 1,084.92 is: 1,493.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.30 : 1,664.74 = 1,084.92 : x
  2. Step 2: Convert to fraction form
    1,209.30/1,664.74 = 1,084.92/x
  3. Step 3: Cross multiply
    1,209.30x = 1,664.74 × 1,084.92
  4. Step 4: Simplify right side
    1,209.30x = 1,806,107.99
  5. Step 5: Solve for x
    x = 1,806,107.99/1,209.30
  6. Step 6: Final answer
    x = 1,493.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.