Home / 1,664.10-2,293.68-1,221.84

Finding the Fourth Proportional to 1,664.10, 2,293.68 and 1,221.84

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Solution

The fourth proportional to 1,664.10, 2,293.68 and 1,221.84 is: 1,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.10 : 2,293.68 = 1,221.84 : x
  2. Step 2: Convert to fraction form
    1,664.10/2,293.68 = 1,221.84/x
  3. Step 3: Cross multiply
    1,664.10x = 2,293.68 × 1,221.84
  4. Step 4: Simplify right side
    1,664.10x = 2,802,509.97
  5. Step 5: Solve for x
    x = 2,802,509.97/1,664.10
  6. Step 6: Final answer
    x = 1,684.10

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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.