Home / 3,120.87-4,680.46-1,040.94

Finding the Fourth Proportional to 3,120.87, 4,680.46 and 1,040.94

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Solution

The fourth proportional to 3,120.87, 4,680.46 and 1,040.94 is: 1,561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.87 : 4,680.46 = 1,040.94 : x
  2. Step 2: Convert to fraction form
    3,120.87/4,680.46 = 1,040.94/x
  3. Step 3: Cross multiply
    3,120.87x = 4,680.46 × 1,040.94
  4. Step 4: Simplify right side
    3,120.87x = 4,872,078.03
  5. Step 5: Solve for x
    x = 4,872,078.03/3,120.87
  6. Step 6: Final answer
    x = 1,561.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.