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Finding the Fourth Proportional to 1,847.78, 2,760.86 and 1,783.21

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Solution

The fourth proportional to 1,847.78, 2,760.86 and 1,783.21 is: 2,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,847.78 : 2,760.86 = 1,783.21 : x
  2. Step 2: Convert to fraction form
    1,847.78/2,760.86 = 1,783.21/x
  3. Step 3: Cross multiply
    1,847.78x = 2,760.86 × 1,783.21
  4. Step 4: Simplify right side
    1,847.78x = 4,923,184.24
  5. Step 5: Solve for x
    x = 4,923,184.24/1,847.78
  6. Step 6: Final answer
    x = 2,664.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.