Home / 3,007.05-4,149.68-1,680.81

Finding the Fourth Proportional to 3,007.05, 4,149.68 and 1,680.81

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Solution

The fourth proportional to 3,007.05, 4,149.68 and 1,680.81 is: 2,319.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.05 : 4,149.68 = 1,680.81 : x
  2. Step 2: Convert to fraction form
    3,007.05/4,149.68 = 1,680.81/x
  3. Step 3: Cross multiply
    3,007.05x = 4,149.68 × 1,680.81
  4. Step 4: Simplify right side
    3,007.05x = 6,974,815.24
  5. Step 5: Solve for x
    x = 6,974,815.24/3,007.05
  6. Step 6: Final answer
    x = 2,319.49

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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.