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Finding the Fourth Proportional to 2,168.77, 2,992.74 and 1,224.49

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Solution

The fourth proportional to 2,168.77, 2,992.74 and 1,224.49 is: 1,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.77 : 2,992.74 = 1,224.49 : x
  2. Step 2: Convert to fraction form
    2,168.77/2,992.74 = 1,224.49/x
  3. Step 3: Cross multiply
    2,168.77x = 2,992.74 × 1,224.49
  4. Step 4: Simplify right side
    2,168.77x = 3,664,580.20
  5. Step 5: Solve for x
    x = 3,664,580.20/2,168.77
  6. Step 6: Final answer
    x = 1,689.70

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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.