Home / 1,869.08-2,801.66-636.06

Finding the Fourth Proportional to 1,869.08, 2,801.66 and 636.06

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Solution

The fourth proportional to 1,869.08, 2,801.66 and 636.06 is: 953.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.08 : 2,801.66 = 636.06 : x
  2. Step 2: Convert to fraction form
    1,869.08/2,801.66 = 636.06/x
  3. Step 3: Cross multiply
    1,869.08x = 2,801.66 × 636.06
  4. Step 4: Simplify right side
    1,869.08x = 1,782,023.86
  5. Step 5: Solve for x
    x = 1,782,023.86/1,869.08
  6. Step 6: Final answer
    x = 953.42

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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.