Home / 6,939.36-10,409.10-2,779.72

Finding the Fourth Proportional to 6,939.36, 10,409.10 and 2,779.72

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Solution

The fourth proportional to 6,939.36, 10,409.10 and 2,779.72 is: 4,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.36 : 10,409.10 = 2,779.72 : x
  2. Step 2: Convert to fraction form
    6,939.36/10,409.10 = 2,779.72/x
  3. Step 3: Cross multiply
    6,939.36x = 10,409.10 × 2,779.72
  4. Step 4: Simplify right side
    6,939.36x = 28,934,383.45
  5. Step 5: Solve for x
    x = 28,934,383.45/6,939.36
  6. Step 6: Final answer
    x = 4,169.60

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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.