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Finding the Fourth Proportional to 2,856.07, 4,283.29 and 908.22

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Solution

The fourth proportional to 2,856.07, 4,283.29 and 908.22 is: 1,362.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.07 : 4,283.29 = 908.22 : x
  2. Step 2: Convert to fraction form
    2,856.07/4,283.29 = 908.22/x
  3. Step 3: Cross multiply
    2,856.07x = 4,283.29 × 908.22
  4. Step 4: Simplify right side
    2,856.07x = 3,890,169.64
  5. Step 5: Solve for x
    x = 3,890,169.64/2,856.07
  6. Step 6: Final answer
    x = 1,362.07

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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.