Home / 3,279.45-4,919.16-1,405.07

Finding the Fourth Proportional to 3,279.45, 4,919.16 and 1,405.07

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Solution

The fourth proportional to 3,279.45, 4,919.16 and 1,405.07 is: 2,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.45 : 4,919.16 = 1,405.07 : x
  2. Step 2: Convert to fraction form
    3,279.45/4,919.16 = 1,405.07/x
  3. Step 3: Cross multiply
    3,279.45x = 4,919.16 × 1,405.07
  4. Step 4: Simplify right side
    3,279.45x = 6,911,763.26
  5. Step 5: Solve for x
    x = 6,911,763.26/3,279.45
  6. Step 6: Final answer
    x = 2,107.60

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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.