Home / 2,013.12-2,778.30-1,128.96

Finding the Fourth Proportional to 2,013.12, 2,778.30 and 1,128.96

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Solution

The fourth proportional to 2,013.12, 2,778.30 and 1,128.96 is: 1,558.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.12 : 2,778.30 = 1,128.96 : x
  2. Step 2: Convert to fraction form
    2,013.12/2,778.30 = 1,128.96/x
  3. Step 3: Cross multiply
    2,013.12x = 2,778.30 × 1,128.96
  4. Step 4: Simplify right side
    2,013.12x = 3,136,589.57
  5. Step 5: Solve for x
    x = 3,136,589.57/2,013.12
  6. Step 6: Final answer
    x = 1,558.07

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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.