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Finding the Fourth Proportional to 3,085.52, 4,644.80 and 2,768

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Solution

The fourth proportional to 3,085.52, 4,644.80 and 2,768 is: 4,166.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.52 : 4,644.80 = 2,768 : x
  2. Step 2: Convert to fraction form
    3,085.52/4,644.80 = 2,768/x
  3. Step 3: Cross multiply
    3,085.52x = 4,644.80 × 2,768
  4. Step 4: Simplify right side
    3,085.52x = 12,856,806.40
  5. Step 5: Solve for x
    x = 12,856,806.40/3,085.52
  6. Step 6: Final answer
    x = 4,166.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.