Home / 2,779.20-4,160.52-1,680.23

Finding the Fourth Proportional to 2,779.20, 4,160.52 and 1,680.23

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Solution

The fourth proportional to 2,779.20, 4,160.52 and 1,680.23 is: 2,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.20 : 4,160.52 = 1,680.23 : x
  2. Step 2: Convert to fraction form
    2,779.20/4,160.52 = 1,680.23/x
  3. Step 3: Cross multiply
    2,779.20x = 4,160.52 × 1,680.23
  4. Step 4: Simplify right side
    2,779.20x = 6,990,640.92
  5. Step 5: Solve for x
    x = 6,990,640.92/2,779.20
  6. Step 6: Final answer
    x = 2,515.34

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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.