Home / 2,013.72-2,779.26-1,383.72

Finding the Fourth Proportional to 2,013.72, 2,779.26 and 1,383.72

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Solution

The fourth proportional to 2,013.72, 2,779.26 and 1,383.72 is: 1,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,013.72 : 2,779.26 = 1,383.72 : x
  2. Step 2: Convert to fraction form
    2,013.72/2,779.26 = 1,383.72/x
  3. Step 3: Cross multiply
    2,013.72x = 2,779.26 × 1,383.72
  4. Step 4: Simplify right side
    2,013.72x = 3,845,717.65
  5. Step 5: Solve for x
    x = 3,845,717.65/2,013.72
  6. Step 6: Final answer
    x = 1,909.76

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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.