Home / 1,589.06-2,192.92-890.44

Finding the Fourth Proportional to 1,589.06, 2,192.92 and 890.44

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Solution

The fourth proportional to 1,589.06, 2,192.92 and 890.44 is: 1,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.06 : 2,192.92 = 890.44 : x
  2. Step 2: Convert to fraction form
    1,589.06/2,192.92 = 890.44/x
  3. Step 3: Cross multiply
    1,589.06x = 2,192.92 × 890.44
  4. Step 4: Simplify right side
    1,589.06x = 1,952,655.98
  5. Step 5: Solve for x
    x = 1,952,655.98/1,589.06
  6. Step 6: Final answer
    x = 1,228.81

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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.