Home / 1,990.62-2,985.93-1,372.41

Finding the Fourth Proportional to 1,990.62, 2,985.93 and 1,372.41

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Solution

The fourth proportional to 1,990.62, 2,985.93 and 1,372.41 is: 2,058.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.62 : 2,985.93 = 1,372.41 : x
  2. Step 2: Convert to fraction form
    1,990.62/2,985.93 = 1,372.41/x
  3. Step 3: Cross multiply
    1,990.62x = 2,985.93 × 1,372.41
  4. Step 4: Simplify right side
    1,990.62x = 4,097,920.19
  5. Step 5: Solve for x
    x = 4,097,920.19/1,990.62
  6. Step 6: Final answer
    x = 2,058.62

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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.