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Finding the Fourth Proportional to 2,783.57, 4,172.11 and 2,752.79

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Solution

The fourth proportional to 2,783.57, 4,172.11 and 2,752.79 is: 4,125.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.57 : 4,172.11 = 2,752.79 : x
  2. Step 2: Convert to fraction form
    2,783.57/4,172.11 = 2,752.79/x
  3. Step 3: Cross multiply
    2,783.57x = 4,172.11 × 2,752.79
  4. Step 4: Simplify right side
    2,783.57x = 11,484,914.94
  5. Step 5: Solve for x
    x = 11,484,914.94/2,783.57
  6. Step 6: Final answer
    x = 4,125.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.