Home / 3,455.80-5,185-2,070.12

Finding the Fourth Proportional to 3,455.80, 5,185 and 2,070.12

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Solution

The fourth proportional to 3,455.80, 5,185 and 2,070.12 is: 3,105.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.80 : 5,185 = 2,070.12 : x
  2. Step 2: Convert to fraction form
    3,455.80/5,185 = 2,070.12/x
  3. Step 3: Cross multiply
    3,455.80x = 5,185 × 2,070.12
  4. Step 4: Simplify right side
    3,455.80x = 10,733,572.20
  5. Step 5: Solve for x
    x = 10,733,572.20/3,455.80
  6. Step 6: Final answer
    x = 3,105.96

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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.