Home / 1,980.39-2,973.62-1,611.66

Finding the Fourth Proportional to 1,980.39, 2,973.62 and 1,611.66

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Solution

The fourth proportional to 1,980.39, 2,973.62 and 1,611.66 is: 2,419.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.39 : 2,973.62 = 1,611.66 : x
  2. Step 2: Convert to fraction form
    1,980.39/2,973.62 = 1,611.66/x
  3. Step 3: Cross multiply
    1,980.39x = 2,973.62 × 1,611.66
  4. Step 4: Simplify right side
    1,980.39x = 4,792,464.41
  5. Step 5: Solve for x
    x = 4,792,464.41/1,980.39
  6. Step 6: Final answer
    x = 2,419.96

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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.