Home / 3,120.45-4,680.67-1,973.49

Finding the Fourth Proportional to 3,120.45, 4,680.67 and 1,973.49

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Solution

The fourth proportional to 3,120.45, 4,680.67 and 1,973.49 is: 2,960.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.45 : 4,680.67 = 1,973.49 : x
  2. Step 2: Convert to fraction form
    3,120.45/4,680.67 = 1,973.49/x
  3. Step 3: Cross multiply
    3,120.45x = 4,680.67 × 1,973.49
  4. Step 4: Simplify right side
    3,120.45x = 9,237,255.44
  5. Step 5: Solve for x
    x = 9,237,255.44/3,120.45
  6. Step 6: Final answer
    x = 2,960.23

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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.