Home / 1,623.78-2,435.20-636.53

Finding the Fourth Proportional to 1,623.78, 2,435.20 and 636.53

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Solution

The fourth proportional to 1,623.78, 2,435.20 and 636.53 is: 954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.78 : 2,435.20 = 636.53 : x
  2. Step 2: Convert to fraction form
    1,623.78/2,435.20 = 636.53/x
  3. Step 3: Cross multiply
    1,623.78x = 2,435.20 × 636.53
  4. Step 4: Simplify right side
    1,623.78x = 1,550,064.09
  5. Step 5: Solve for x
    x = 1,550,064.09/1,623.78
  6. Step 6: Final answer
    x = 954.60

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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.