Home / 2,946.78-4,066.89-1,620.60

Finding the Fourth Proportional to 2,946.78, 4,066.89 and 1,620.60

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Solution

The fourth proportional to 2,946.78, 4,066.89 and 1,620.60 is: 2,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,946.78 : 4,066.89 = 1,620.60 : x
  2. Step 2: Convert to fraction form
    2,946.78/4,066.89 = 1,620.60/x
  3. Step 3: Cross multiply
    2,946.78x = 4,066.89 × 1,620.60
  4. Step 4: Simplify right side
    2,946.78x = 6,590,801.93
  5. Step 5: Solve for x
    x = 6,590,801.93/2,946.78
  6. Step 6: Final answer
    x = 2,236.61

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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.