Home / 3,845.78-5,305.20-2,271.14

Finding the Fourth Proportional to 3,845.78, 5,305.20 and 2,271.14

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Solution

The fourth proportional to 3,845.78, 5,305.20 and 2,271.14 is: 3,133.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.78 : 5,305.20 = 2,271.14 : x
  2. Step 2: Convert to fraction form
    3,845.78/5,305.20 = 2,271.14/x
  3. Step 3: Cross multiply
    3,845.78x = 5,305.20 × 2,271.14
  4. Step 4: Simplify right side
    3,845.78x = 12,048,851.93
  5. Step 5: Solve for x
    x = 12,048,851.93/3,845.78
  6. Step 6: Final answer
    x = 3,133.01

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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.