Home / 2,080.45-3,120.67-847.53

Finding the Fourth Proportional to 2,080.45, 3,120.67 and 847.53

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Solution

The fourth proportional to 2,080.45, 3,120.67 and 847.53 is: 1,271.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.45 : 3,120.67 = 847.53 : x
  2. Step 2: Convert to fraction form
    2,080.45/3,120.67 = 847.53/x
  3. Step 3: Cross multiply
    2,080.45x = 3,120.67 × 847.53
  4. Step 4: Simplify right side
    2,080.45x = 2,644,861.45
  5. Step 5: Solve for x
    x = 2,644,861.45/2,080.45
  6. Step 6: Final answer
    x = 1,271.29

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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.