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Finding the Fourth Proportional to 2,855.72, 4,283.92 and 1,006.45

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Solution

The fourth proportional to 2,855.72, 4,283.92 and 1,006.45 is: 1,509.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.72 : 4,283.92 = 1,006.45 : x
  2. Step 2: Convert to fraction form
    2,855.72/4,283.92 = 1,006.45/x
  3. Step 3: Cross multiply
    2,855.72x = 4,283.92 × 1,006.45
  4. Step 4: Simplify right side
    2,855.72x = 4,311,546.72
  5. Step 5: Solve for x
    x = 4,311,546.72/2,855.72
  6. Step 6: Final answer
    x = 1,509.79

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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.