Home / 1,318.35-1,974.67-623.97

Finding the Fourth Proportional to 1,318.35, 1,974.67 and 623.97

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Solution

The fourth proportional to 1,318.35, 1,974.67 and 623.97 is: 934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.35 : 1,974.67 = 623.97 : x
  2. Step 2: Convert to fraction form
    1,318.35/1,974.67 = 623.97/x
  3. Step 3: Cross multiply
    1,318.35x = 1,974.67 × 623.97
  4. Step 4: Simplify right side
    1,318.35x = 1,232,134.84
  5. Step 5: Solve for x
    x = 1,232,134.84/1,318.35
  6. Step 6: Final answer
    x = 934.60

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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.