Home / 3,007.11-4,149.80-1,680.81

Finding the Fourth Proportional to 3,007.11, 4,149.80 and 1,680.81

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Solution

The fourth proportional to 3,007.11, 4,149.80 and 1,680.81 is: 2,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.11 : 4,149.80 = 1,680.81 : x
  2. Step 2: Convert to fraction form
    3,007.11/4,149.80 = 1,680.81/x
  3. Step 3: Cross multiply
    3,007.11x = 4,149.80 × 1,680.81
  4. Step 4: Simplify right side
    3,007.11x = 6,975,040.90
  5. Step 5: Solve for x
    x = 6,975,040.90/3,007.11
  6. Step 6: Final answer
    x = 2,319.52

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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.