Home / 3,006.90-4,149.41-1,680.63

Finding the Fourth Proportional to 3,006.90, 4,149.41 and 1,680.63

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Solution

The fourth proportional to 3,006.90, 4,149.41 and 1,680.63 is: 2,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,006.90 : 4,149.41 = 1,680.63 : x
  2. Step 2: Convert to fraction form
    3,006.90/4,149.41 = 1,680.63/x
  3. Step 3: Cross multiply
    3,006.90x = 4,149.41 × 1,680.63
  4. Step 4: Simplify right side
    3,006.90x = 6,973,608.42
  5. Step 5: Solve for x
    x = 6,973,608.42/3,006.90
  6. Step 6: Final answer
    x = 2,319.20

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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.