Home / 2,681.70-4,023.20-1,120.85

Finding the Fourth Proportional to 2,681.70, 4,023.20 and 1,120.85

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Solution

The fourth proportional to 2,681.70, 4,023.20 and 1,120.85 is: 1,681.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.70 : 4,023.20 = 1,120.85 : x
  2. Step 2: Convert to fraction form
    2,681.70/4,023.20 = 1,120.85/x
  3. Step 3: Cross multiply
    2,681.70x = 4,023.20 × 1,120.85
  4. Step 4: Simplify right side
    2,681.70x = 4,509,378.00
  5. Step 5: Solve for x
    x = 4,509,378.00/2,681.70
  6. Step 6: Final answer
    x = 1,681.54

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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.