Home / 2,187.85-3,019.25-1,193.15

Finding the Fourth Proportional to 2,187.85, 3,019.25 and 1,193.15

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Solution

The fourth proportional to 2,187.85, 3,019.25 and 1,193.15 is: 1,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.85 : 3,019.25 = 1,193.15 : x
  2. Step 2: Convert to fraction form
    2,187.85/3,019.25 = 1,193.15/x
  3. Step 3: Cross multiply
    2,187.85x = 3,019.25 × 1,193.15
  4. Step 4: Simplify right side
    2,187.85x = 3,602,418.14
  5. Step 5: Solve for x
    x = 3,602,418.14/2,187.85
  6. Step 6: Final answer
    x = 1,646.56

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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.