Home / 1,590.21-2,194.09-881.97

Finding the Fourth Proportional to 1,590.21, 2,194.09 and 881.97

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Solution

The fourth proportional to 1,590.21, 2,194.09 and 881.97 is: 1,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.21 : 2,194.09 = 881.97 : x
  2. Step 2: Convert to fraction form
    1,590.21/2,194.09 = 881.97/x
  3. Step 3: Cross multiply
    1,590.21x = 2,194.09 × 881.97
  4. Step 4: Simplify right side
    1,590.21x = 1,935,121.56
  5. Step 5: Solve for x
    x = 1,935,121.56/1,590.21
  6. Step 6: Final answer
    x = 1,216.90

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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.