Home / 3,380.59-5,071.11-1,405.45

Finding the Fourth Proportional to 3,380.59, 5,071.11 and 1,405.45

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Solution

The fourth proportional to 3,380.59, 5,071.11 and 1,405.45 is: 2,108.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.59 : 5,071.11 = 1,405.45 : x
  2. Step 2: Convert to fraction form
    3,380.59/5,071.11 = 1,405.45/x
  3. Step 3: Cross multiply
    3,380.59x = 5,071.11 × 1,405.45
  4. Step 4: Simplify right side
    3,380.59x = 7,127,192.62
  5. Step 5: Solve for x
    x = 7,127,192.62/3,380.59
  6. Step 6: Final answer
    x = 2,108.27

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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.