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Finding the Fourth Proportional to 2,406.90, 3,607.46 and 1,974.90

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Solution

The fourth proportional to 2,406.90, 3,607.46 and 1,974.90 is: 2,959.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,406.90 : 3,607.46 = 1,974.90 : x
  2. Step 2: Convert to fraction form
    2,406.90/3,607.46 = 1,974.90/x
  3. Step 3: Cross multiply
    2,406.90x = 3,607.46 × 1,974.90
  4. Step 4: Simplify right side
    2,406.90x = 7,124,372.75
  5. Step 5: Solve for x
    x = 7,124,372.75/2,406.90
  6. Step 6: Final answer
    x = 2,959.98

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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.