Home / 1,765.06-2,647.28-985.84

Finding the Fourth Proportional to 1,765.06, 2,647.28 and 985.84

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Solution

The fourth proportional to 1,765.06, 2,647.28 and 985.84 is: 1,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.06 : 2,647.28 = 985.84 : x
  2. Step 2: Convert to fraction form
    1,765.06/2,647.28 = 985.84/x
  3. Step 3: Cross multiply
    1,765.06x = 2,647.28 × 985.84
  4. Step 4: Simplify right side
    1,765.06x = 2,609,790.36
  5. Step 5: Solve for x
    x = 2,609,790.36/1,765.06
  6. Step 6: Final answer
    x = 1,478.59

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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.