Home / 2,811.02-3,880.23-2,286.14

Finding the Fourth Proportional to 2,811.02, 3,880.23 and 2,286.14

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Solution

The fourth proportional to 2,811.02, 3,880.23 and 2,286.14 is: 3,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.02 : 3,880.23 = 2,286.14 : x
  2. Step 2: Convert to fraction form
    2,811.02/3,880.23 = 2,286.14/x
  3. Step 3: Cross multiply
    2,811.02x = 3,880.23 × 2,286.14
  4. Step 4: Simplify right side
    2,811.02x = 8,870,749.01
  5. Step 5: Solve for x
    x = 8,870,749.01/2,811.02
  6. Step 6: Final answer
    x = 3,155.70

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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.