Home / 3,102.57-4,279.33-1,907.62

Finding the Fourth Proportional to 3,102.57, 4,279.33 and 1,907.62

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Solution

The fourth proportional to 3,102.57, 4,279.33 and 1,907.62 is: 2,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.57 : 4,279.33 = 1,907.62 : x
  2. Step 2: Convert to fraction form
    3,102.57/4,279.33 = 1,907.62/x
  3. Step 3: Cross multiply
    3,102.57x = 4,279.33 × 1,907.62
  4. Step 4: Simplify right side
    3,102.57x = 8,163,335.49
  5. Step 5: Solve for x
    x = 8,163,335.49/3,102.57
  6. Step 6: Final answer
    x = 2,631.15

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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.