Home / 3,106.16-4,286.30-1,779.56

Finding the Fourth Proportional to 3,106.16, 4,286.30 and 1,779.56

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Solution

The fourth proportional to 3,106.16, 4,286.30 and 1,779.56 is: 2,455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.16 : 4,286.30 = 1,779.56 : x
  2. Step 2: Convert to fraction form
    3,106.16/4,286.30 = 1,779.56/x
  3. Step 3: Cross multiply
    3,106.16x = 4,286.30 × 1,779.56
  4. Step 4: Simplify right side
    3,106.16x = 7,627,728.03
  5. Step 5: Solve for x
    x = 7,627,728.03/3,106.16
  6. Step 6: Final answer
    x = 2,455.68

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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.