Home / 2,911.60-4,367.35-720.33

Finding the Fourth Proportional to 2,911.60, 4,367.35 and 720.33

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Solution

The fourth proportional to 2,911.60, 4,367.35 and 720.33 is: 1,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.60 : 4,367.35 = 720.33 : x
  2. Step 2: Convert to fraction form
    2,911.60/4,367.35 = 720.33/x
  3. Step 3: Cross multiply
    2,911.60x = 4,367.35 × 720.33
  4. Step 4: Simplify right side
    2,911.60x = 3,145,933.23
  5. Step 5: Solve for x
    x = 3,145,933.23/2,911.60
  6. Step 6: Final answer
    x = 1,080.48

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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.