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Finding the Fourth Proportional to 2,783.92, 3,840.97 and 1,790.35

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Solution

The fourth proportional to 2,783.92, 3,840.97 and 1,790.35 is: 2,470.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.92 : 3,840.97 = 1,790.35 : x
  2. Step 2: Convert to fraction form
    2,783.92/3,840.97 = 1,790.35/x
  3. Step 3: Cross multiply
    2,783.92x = 3,840.97 × 1,790.35
  4. Step 4: Simplify right side
    2,783.92x = 6,876,680.64
  5. Step 5: Solve for x
    x = 6,876,680.64/2,783.92
  6. Step 6: Final answer
    x = 2,470.14

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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.