Home / 3,006.85-4,149.55-1,680.63

Finding the Fourth Proportional to 3,006.85, 4,149.55 and 1,680.63

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Solution

The fourth proportional to 3,006.85, 4,149.55 and 1,680.63 is: 2,319.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,006.85 : 4,149.55 = 1,680.63 : x
  2. Step 2: Convert to fraction form
    3,006.85/4,149.55 = 1,680.63/x
  3. Step 3: Cross multiply
    3,006.85x = 4,149.55 × 1,680.63
  4. Step 4: Simplify right side
    3,006.85x = 6,973,872.82
  5. Step 5: Solve for x
    x = 6,973,872.82/3,006.85
  6. Step 6: Final answer
    x = 2,319.33

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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.