Home / 1,331.62-1,836.60-889.36

Finding the Fourth Proportional to 1,331.62, 1,836.60 and 889.36

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Solution

The fourth proportional to 1,331.62, 1,836.60 and 889.36 is: 1,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.62 : 1,836.60 = 889.36 : x
  2. Step 2: Convert to fraction form
    1,331.62/1,836.60 = 889.36/x
  3. Step 3: Cross multiply
    1,331.62x = 1,836.60 × 889.36
  4. Step 4: Simplify right side
    1,331.62x = 1,633,398.58
  5. Step 5: Solve for x
    x = 1,633,398.58/1,331.62
  6. Step 6: Final answer
    x = 1,226.63

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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.