Home / 2,816.80-4,226.10-1,256.20

Finding the Fourth Proportional to 2,816.80, 4,226.10 and 1,256.20

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Solution

The fourth proportional to 2,816.80, 4,226.10 and 1,256.20 is: 1,884.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.80 : 4,226.10 = 1,256.20 : x
  2. Step 2: Convert to fraction form
    2,816.80/4,226.10 = 1,256.20/x
  3. Step 3: Cross multiply
    2,816.80x = 4,226.10 × 1,256.20
  4. Step 4: Simplify right side
    2,816.80x = 5,308,826.82
  5. Step 5: Solve for x
    x = 5,308,826.82/2,816.80
  6. Step 6: Final answer
    x = 1,884.70

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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.