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Finding the Fourth Proportional to 4,974, 7,461 and 1,896.72

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Solution

The fourth proportional to 4,974, 7,461 and 1,896.72 is: 2,845.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974 : 7,461 = 1,896.72 : x
  2. Step 2: Convert to fraction form
    4,974/7,461 = 1,896.72/x
  3. Step 3: Cross multiply
    4,974x = 7,461 × 1,896.72
  4. Step 4: Simplify right side
    4,974x = 14,151,427.92
  5. Step 5: Solve for x
    x = 14,151,427.92/4,974
  6. Step 6: Final answer
    x = 2,845.08

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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.