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Finding the Fourth Proportional to 3,137.52, 4,330.05 and 1,811.43

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Solution

The fourth proportional to 3,137.52, 4,330.05 and 1,811.43 is: 2,499.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.52 : 4,330.05 = 1,811.43 : x
  2. Step 2: Convert to fraction form
    3,137.52/4,330.05 = 1,811.43/x
  3. Step 3: Cross multiply
    3,137.52x = 4,330.05 × 1,811.43
  4. Step 4: Simplify right side
    3,137.52x = 7,843,582.47
  5. Step 5: Solve for x
    x = 7,843,582.47/3,137.52
  6. Step 6: Final answer
    x = 2,499.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.