Home / 3,120.70-4,681.74-1,172.92

Finding the Fourth Proportional to 3,120.70, 4,681.74 and 1,172.92

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Solution

The fourth proportional to 3,120.70, 4,681.74 and 1,172.92 is: 1,759.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.70 : 4,681.74 = 1,172.92 : x
  2. Step 2: Convert to fraction form
    3,120.70/4,681.74 = 1,172.92/x
  3. Step 3: Cross multiply
    3,120.70x = 4,681.74 × 1,172.92
  4. Step 4: Simplify right side
    3,120.70x = 5,491,306.48
  5. Step 5: Solve for x
    x = 5,491,306.48/3,120.70
  6. Step 6: Final answer
    x = 1,759.64

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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.