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Finding the Fourth Proportional to 1,869.40, 2,574.75 and 1,620.73

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Solution

The fourth proportional to 1,869.40, 2,574.75 and 1,620.73 is: 2,232.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.40 : 2,574.75 = 1,620.73 : x
  2. Step 2: Convert to fraction form
    1,869.40/2,574.75 = 1,620.73/x
  3. Step 3: Cross multiply
    1,869.40x = 2,574.75 × 1,620.73
  4. Step 4: Simplify right side
    1,869.40x = 4,172,974.57
  5. Step 5: Solve for x
    x = 4,172,974.57/1,869.40
  6. Step 6: Final answer
    x = 2,232.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.