Home / 1,240.07-1,861.12-623.95

Finding the Fourth Proportional to 1,240.07, 1,861.12 and 623.95

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Solution

The fourth proportional to 1,240.07, 1,861.12 and 623.95 is: 936.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.07 : 1,861.12 = 623.95 : x
  2. Step 2: Convert to fraction form
    1,240.07/1,861.12 = 623.95/x
  3. Step 3: Cross multiply
    1,240.07x = 1,861.12 × 623.95
  4. Step 4: Simplify right side
    1,240.07x = 1,161,236.52
  5. Step 5: Solve for x
    x = 1,161,236.52/1,240.07
  6. Step 6: Final answer
    x = 936.43

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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.