Home / 2,168.90-2,992.35-1,224.58

Finding the Fourth Proportional to 2,168.90, 2,992.35 and 1,224.58

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Solution

The fourth proportional to 2,168.90, 2,992.35 and 1,224.58 is: 1,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.90 : 2,992.35 = 1,224.58 : x
  2. Step 2: Convert to fraction form
    2,168.90/2,992.35 = 1,224.58/x
  3. Step 3: Cross multiply
    2,168.90x = 2,992.35 × 1,224.58
  4. Step 4: Simplify right side
    2,168.90x = 3,664,365.84
  5. Step 5: Solve for x
    x = 3,664,365.84/2,168.90
  6. Step 6: Final answer
    x = 1,689.50

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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.