Home / 1,850.91-2,553.44-1,220.63

Finding the Fourth Proportional to 1,850.91, 2,553.44 and 1,220.63

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Solution

The fourth proportional to 1,850.91, 2,553.44 and 1,220.63 is: 1,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.91 : 2,553.44 = 1,220.63 : x
  2. Step 2: Convert to fraction form
    1,850.91/2,553.44 = 1,220.63/x
  3. Step 3: Cross multiply
    1,850.91x = 2,553.44 × 1,220.63
  4. Step 4: Simplify right side
    1,850.91x = 3,116,799.36
  5. Step 5: Solve for x
    x = 3,116,799.36/1,850.91
  6. Step 6: Final answer
    x = 1,683.93

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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.