Home / 3,100.88-4,276.68-2,315.60

Finding the Fourth Proportional to 3,100.88, 4,276.68 and 2,315.60

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Solution

The fourth proportional to 3,100.88, 4,276.68 and 2,315.60 is: 3,193.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.88 : 4,276.68 = 2,315.60 : x
  2. Step 2: Convert to fraction form
    3,100.88/4,276.68 = 2,315.60/x
  3. Step 3: Cross multiply
    3,100.88x = 4,276.68 × 2,315.60
  4. Step 4: Simplify right side
    3,100.88x = 9,903,080.21
  5. Step 5: Solve for x
    x = 9,903,080.21/3,100.88
  6. Step 6: Final answer
    x = 3,193.64

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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.