Home / 2,189.80-3,285.09-837.36

Finding the Fourth Proportional to 2,189.80, 3,285.09 and 837.36

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Solution

The fourth proportional to 2,189.80, 3,285.09 and 837.36 is: 1,256.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.80 : 3,285.09 = 837.36 : x
  2. Step 2: Convert to fraction form
    2,189.80/3,285.09 = 837.36/x
  3. Step 3: Cross multiply
    2,189.80x = 3,285.09 × 837.36
  4. Step 4: Simplify right side
    2,189.80x = 2,750,802.96
  5. Step 5: Solve for x
    x = 2,750,802.96/2,189.80
  6. Step 6: Final answer
    x = 1,256.19

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1.5x scale

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.