Home / 1,998.09-2,757.11-1,147.32

Finding the Fourth Proportional to 1,998.09, 2,757.11 and 1,147.32

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Solution

The fourth proportional to 1,998.09, 2,757.11 and 1,147.32 is: 1,583.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.09 : 2,757.11 = 1,147.32 : x
  2. Step 2: Convert to fraction form
    1,998.09/2,757.11 = 1,147.32/x
  3. Step 3: Cross multiply
    1,998.09x = 2,757.11 × 1,147.32
  4. Step 4: Simplify right side
    1,998.09x = 3,163,281.71
  5. Step 5: Solve for x
    x = 3,163,281.71/1,998.09
  6. Step 6: Final answer
    x = 1,583.15

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1.5x scale

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.