Home / 3,006.79-4,149.36-1,680.50

Finding the Fourth Proportional to 3,006.79, 4,149.36 and 1,680.50

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Solution

The fourth proportional to 3,006.79, 4,149.36 and 1,680.50 is: 2,319.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,006.79 : 4,149.36 = 1,680.50 : x
  2. Step 2: Convert to fraction form
    3,006.79/4,149.36 = 1,680.50/x
  3. Step 3: Cross multiply
    3,006.79x = 4,149.36 × 1,680.50
  4. Step 4: Simplify right side
    3,006.79x = 6,972,978.73
  5. Step 5: Solve for x
    x = 6,972,978.73/3,006.79
  6. Step 6: Final answer
    x = 2,319.08

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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.