Home / 2,619.72-3,611.58-1,779.12

Finding the Fourth Proportional to 2,619.72, 3,611.58 and 1,779.12

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Solution

The fourth proportional to 2,619.72, 3,611.58 and 1,779.12 is: 2,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.72 : 3,611.58 = 1,779.12 : x
  2. Step 2: Convert to fraction form
    2,619.72/3,611.58 = 1,779.12/x
  3. Step 3: Cross multiply
    2,619.72x = 3,611.58 × 1,779.12
  4. Step 4: Simplify right side
    2,619.72x = 6,425,434.21
  5. Step 5: Solve for x
    x = 6,425,434.21/2,619.72
  6. Step 6: Final answer
    x = 2,452.72

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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.