Home / 1,392.25-2,090.19-1,177.19

Finding the Fourth Proportional to 1,392.25, 2,090.19 and 1,177.19

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Solution

The fourth proportional to 1,392.25, 2,090.19 and 1,177.19 is: 1,767.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.25 : 2,090.19 = 1,177.19 : x
  2. Step 2: Convert to fraction form
    1,392.25/2,090.19 = 1,177.19/x
  3. Step 3: Cross multiply
    1,392.25x = 2,090.19 × 1,177.19
  4. Step 4: Simplify right side
    1,392.25x = 2,460,550.77
  5. Step 5: Solve for x
    x = 2,460,550.77/1,392.25
  6. Step 6: Final answer
    x = 1,767.32

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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.