Home / 1,990.33-2,986.38-1,017.11

Finding the Fourth Proportional to 1,990.33, 2,986.38 and 1,017.11

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Solution

The fourth proportional to 1,990.33, 2,986.38 and 1,017.11 is: 1,526.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.33 : 2,986.38 = 1,017.11 : x
  2. Step 2: Convert to fraction form
    1,990.33/2,986.38 = 1,017.11/x
  3. Step 3: Cross multiply
    1,990.33x = 2,986.38 × 1,017.11
  4. Step 4: Simplify right side
    1,990.33x = 3,037,484.43
  5. Step 5: Solve for x
    x = 3,037,484.43/1,990.33
  6. Step 6: Final answer
    x = 1,526.12

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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.