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Finding the Fourth Proportional to 2,615.54, 3,920.78 and 883.22

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Solution

The fourth proportional to 2,615.54, 3,920.78 and 883.22 is: 1,323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.54 : 3,920.78 = 883.22 : x
  2. Step 2: Convert to fraction form
    2,615.54/3,920.78 = 883.22/x
  3. Step 3: Cross multiply
    2,615.54x = 3,920.78 × 883.22
  4. Step 4: Simplify right side
    2,615.54x = 3,462,887.29
  5. Step 5: Solve for x
    x = 3,462,887.29/2,615.54
  6. Step 6: Final answer
    x = 1,323.97

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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.