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Finding the Fourth Proportional to 2,758.01, 4,137.02 and 678.02

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Solution

The fourth proportional to 2,758.01, 4,137.02 and 678.02 is: 1,017.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.01 : 4,137.02 = 678.02 : x
  2. Step 2: Convert to fraction form
    2,758.01/4,137.02 = 678.02/x
  3. Step 3: Cross multiply
    2,758.01x = 4,137.02 × 678.02
  4. Step 4: Simplify right side
    2,758.01x = 2,804,958.23
  5. Step 5: Solve for x
    x = 2,804,958.23/2,758.01
  6. Step 6: Final answer
    x = 1,017.02

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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.