Home / 1,331.06-1,837.62-889.60

Finding the Fourth Proportional to 1,331.06, 1,837.62 and 889.60

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Solution

The fourth proportional to 1,331.06, 1,837.62 and 889.60 is: 1,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.06 : 1,837.62 = 889.60 : x
  2. Step 2: Convert to fraction form
    1,331.06/1,837.62 = 889.60/x
  3. Step 3: Cross multiply
    1,331.06x = 1,837.62 × 889.60
  4. Step 4: Simplify right side
    1,331.06x = 1,634,746.75
  5. Step 5: Solve for x
    x = 1,634,746.75/1,331.06
  6. Step 6: Final answer
    x = 1,228.15

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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.