Home / 2,011.20-2,779.27-1,512.98

Finding the Fourth Proportional to 2,011.20, 2,779.27 and 1,512.98

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Solution

The fourth proportional to 2,011.20, 2,779.27 and 1,512.98 is: 2,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.20 : 2,779.27 = 1,512.98 : x
  2. Step 2: Convert to fraction form
    2,011.20/2,779.27 = 1,512.98/x
  3. Step 3: Cross multiply
    2,011.20x = 2,779.27 × 1,512.98
  4. Step 4: Simplify right side
    2,011.20x = 4,204,983.31
  5. Step 5: Solve for x
    x = 4,204,983.31/2,011.20
  6. Step 6: Final answer
    x = 2,090.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.