Home / 2,946.31-4,066.01-1,620.11

Finding the Fourth Proportional to 2,946.31, 4,066.01 and 1,620.11

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Solution

The fourth proportional to 2,946.31, 4,066.01 and 1,620.11 is: 2,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,946.31 : 4,066.01 = 1,620.11 : x
  2. Step 2: Convert to fraction form
    2,946.31/4,066.01 = 1,620.11/x
  3. Step 3: Cross multiply
    2,946.31x = 4,066.01 × 1,620.11
  4. Step 4: Simplify right side
    2,946.31x = 6,587,391.60
  5. Step 5: Solve for x
    x = 6,587,391.60/2,946.31
  6. Step 6: Final answer
    x = 2,235.81

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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.