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Finding the Fourth Proportional to 2,146.12, 3,218.94 and 607

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Solution

The fourth proportional to 2,146.12, 3,218.94 and 607 is: 910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.12 : 3,218.94 = 607 : x
  2. Step 2: Convert to fraction form
    2,146.12/3,218.94 = 607/x
  3. Step 3: Cross multiply
    2,146.12x = 3,218.94 × 607
  4. Step 4: Simplify right side
    2,146.12x = 1,953,896.58
  5. Step 5: Solve for x
    x = 1,953,896.58/2,146.12
  6. Step 6: Final answer
    x = 910.43

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Double scale
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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.