Home / 2,131.60-3,197.40-1,543

Finding the Fourth Proportional to 2,131.60, 3,197.40 and 1,543

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Solution

The fourth proportional to 2,131.60, 3,197.40 and 1,543 is: 2,314.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.60 : 3,197.40 = 1,543 : x
  2. Step 2: Convert to fraction form
    2,131.60/3,197.40 = 1,543/x
  3. Step 3: Cross multiply
    2,131.60x = 3,197.40 × 1,543
  4. Step 4: Simplify right side
    2,131.60x = 4,933,588.20
  5. Step 5: Solve for x
    x = 4,933,588.20/2,131.60
  6. Step 6: Final answer
    x = 2,314.50

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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.