Home / 1,391.10-1,918.02-1,194.27

Finding the Fourth Proportional to 1,391.10, 1,918.02 and 1,194.27

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Solution

The fourth proportional to 1,391.10, 1,918.02 and 1,194.27 is: 1,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.10 : 1,918.02 = 1,194.27 : x
  2. Step 2: Convert to fraction form
    1,391.10/1,918.02 = 1,194.27/x
  3. Step 3: Cross multiply
    1,391.10x = 1,918.02 × 1,194.27
  4. Step 4: Simplify right side
    1,391.10x = 2,290,633.75
  5. Step 5: Solve for x
    x = 2,290,633.75/1,391.10
  6. Step 6: Final answer
    x = 1,646.63

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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.