Home / 1,637.40-2,454.22-813.83

Finding the Fourth Proportional to 1,637.40, 2,454.22 and 813.83

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Solution

The fourth proportional to 1,637.40, 2,454.22 and 813.83 is: 1,219.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.40 : 2,454.22 = 813.83 : x
  2. Step 2: Convert to fraction form
    1,637.40/2,454.22 = 813.83/x
  3. Step 3: Cross multiply
    1,637.40x = 2,454.22 × 813.83
  4. Step 4: Simplify right side
    1,637.40x = 1,997,317.86
  5. Step 5: Solve for x
    x = 1,997,317.86/1,637.40
  6. Step 6: Final answer
    x = 1,219.81

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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.