Home / 1,418.11-2,114.66-1,319.49

Finding the Fourth Proportional to 1,418.11, 2,114.66 and 1,319.49

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Solution

The fourth proportional to 1,418.11, 2,114.66 and 1,319.49 is: 1,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.11 : 2,114.66 = 1,319.49 : x
  2. Step 2: Convert to fraction form
    1,418.11/2,114.66 = 1,319.49/x
  3. Step 3: Cross multiply
    1,418.11x = 2,114.66 × 1,319.49
  4. Step 4: Simplify right side
    1,418.11x = 2,790,268.60
  5. Step 5: Solve for x
    x = 2,790,268.60/1,418.11
  6. Step 6: Final answer
    x = 1,967.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.