Home / 1,394.19-2,091.25-571.90

Finding the Fourth Proportional to 1,394.19, 2,091.25 and 571.90

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Solution

The fourth proportional to 1,394.19, 2,091.25 and 571.90 is: 857.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.19 : 2,091.25 = 571.90 : x
  2. Step 2: Convert to fraction form
    1,394.19/2,091.25 = 571.90/x
  3. Step 3: Cross multiply
    1,394.19x = 2,091.25 × 571.90
  4. Step 4: Simplify right side
    1,394.19x = 1,195,985.88
  5. Step 5: Solve for x
    x = 1,195,985.88/1,394.19
  6. Step 6: Final answer
    x = 857.84

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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.