Home / 2,779.40-4,177.20-2,730.80

Finding the Fourth Proportional to 2,779.40, 4,177.20 and 2,730.80

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Solution

The fourth proportional to 2,779.40, 4,177.20 and 2,730.80 is: 4,104.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.40 : 4,177.20 = 2,730.80 : x
  2. Step 2: Convert to fraction form
    2,779.40/4,177.20 = 2,730.80/x
  3. Step 3: Cross multiply
    2,779.40x = 4,177.20 × 2,730.80
  4. Step 4: Simplify right side
    2,779.40x = 11,407,097.76
  5. Step 5: Solve for x
    x = 11,407,097.76/2,779.40
  6. Step 6: Final answer
    x = 4,104.16

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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.