Home / 3,137.60-4,330.05-1,721.35

Finding the Fourth Proportional to 3,137.60, 4,330.05 and 1,721.35

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Solution

The fourth proportional to 3,137.60, 4,330.05 and 1,721.35 is: 2,375.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.60 : 4,330.05 = 1,721.35 : x
  2. Step 2: Convert to fraction form
    3,137.60/4,330.05 = 1,721.35/x
  3. Step 3: Cross multiply
    3,137.60x = 4,330.05 × 1,721.35
  4. Step 4: Simplify right side
    3,137.60x = 7,453,520.74
  5. Step 5: Solve for x
    x = 7,453,520.74/3,137.60
  6. Step 6: Final answer
    x = 2,375.55

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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.