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Finding the Fourth Proportional to 2,009.92, 2,774.24 and 1,223.96

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Solution

The fourth proportional to 2,009.92, 2,774.24 and 1,223.96 is: 1,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,009.92 : 2,774.24 = 1,223.96 : x
  2. Step 2: Convert to fraction form
    2,009.92/2,774.24 = 1,223.96/x
  3. Step 3: Cross multiply
    2,009.92x = 2,774.24 × 1,223.96
  4. Step 4: Simplify right side
    2,009.92x = 3,395,558.79
  5. Step 5: Solve for x
    x = 3,395,558.79/2,009.92
  6. Step 6: Final answer
    x = 1,689.40

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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.