Home / 1,485.14-2,049.75-887.66

Finding the Fourth Proportional to 1,485.14, 2,049.75 and 887.66

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Solution

The fourth proportional to 1,485.14, 2,049.75 and 887.66 is: 1,225.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.14 : 2,049.75 = 887.66 : x
  2. Step 2: Convert to fraction form
    1,485.14/2,049.75 = 887.66/x
  3. Step 3: Cross multiply
    1,485.14x = 2,049.75 × 887.66
  4. Step 4: Simplify right side
    1,485.14x = 1,819,481.09
  5. Step 5: Solve for x
    x = 1,819,481.09/1,485.14
  6. Step 6: Final answer
    x = 1,225.12

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Why These Related Problems?

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