Home / 1,403.72-2,105.30-634.04

Finding the Fourth Proportional to 1,403.72, 2,105.30 and 634.04

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Solution

The fourth proportional to 1,403.72, 2,105.30 and 634.04 is: 950.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.72 : 2,105.30 = 634.04 : x
  2. Step 2: Convert to fraction form
    1,403.72/2,105.30 = 634.04/x
  3. Step 3: Cross multiply
    1,403.72x = 2,105.30 × 634.04
  4. Step 4: Simplify right side
    1,403.72x = 1,334,844.41
  5. Step 5: Solve for x
    x = 1,334,844.41/1,403.72
  6. Step 6: Final answer
    x = 950.93

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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.