Home / 1,664.49-2,486.26-1,221.83

Finding the Fourth Proportional to 1,664.49, 2,486.26 and 1,221.83

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Solution

The fourth proportional to 1,664.49, 2,486.26 and 1,221.83 is: 1,825.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.49 : 2,486.26 = 1,221.83 : x
  2. Step 2: Convert to fraction form
    1,664.49/2,486.26 = 1,221.83/x
  3. Step 3: Cross multiply
    1,664.49x = 2,486.26 × 1,221.83
  4. Step 4: Simplify right side
    1,664.49x = 3,037,787.06
  5. Step 5: Solve for x
    x = 3,037,787.06/1,664.49
  6. Step 6: Final answer
    x = 1,825.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.