Home / 3,405.83-5,108.30-1,326.47

Finding the Fourth Proportional to 3,405.83, 5,108.30 and 1,326.47

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Solution

The fourth proportional to 3,405.83, 5,108.30 and 1,326.47 is: 1,989.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.83 : 5,108.30 = 1,326.47 : x
  2. Step 2: Convert to fraction form
    3,405.83/5,108.30 = 1,326.47/x
  3. Step 3: Cross multiply
    3,405.83x = 5,108.30 × 1,326.47
  4. Step 4: Simplify right side
    3,405.83x = 6,776,012.84
  5. Step 5: Solve for x
    x = 6,776,012.84/3,405.83
  6. Step 6: Final answer
    x = 1,989.53

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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.