Home / 3,455.66-5,185.32-2,071.78

Finding the Fourth Proportional to 3,455.66, 5,185.32 and 2,071.78

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Solution

The fourth proportional to 3,455.66, 5,185.32 and 2,071.78 is: 3,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.66 : 5,185.32 = 2,071.78 : x
  2. Step 2: Convert to fraction form
    3,455.66/5,185.32 = 2,071.78/x
  3. Step 3: Cross multiply
    3,455.66x = 5,185.32 × 2,071.78
  4. Step 4: Simplify right side
    3,455.66x = 10,742,821.54
  5. Step 5: Solve for x
    x = 10,742,821.54/3,455.66
  6. Step 6: Final answer
    x = 3,108.76

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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.