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Finding the Fourth Proportional to 6,372.63, 9,559.80 and 1,990.53

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Solution

The fourth proportional to 6,372.63, 9,559.80 and 1,990.53 is: 2,986.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,372.63 : 9,559.80 = 1,990.53 : x
  2. Step 2: Convert to fraction form
    6,372.63/9,559.80 = 1,990.53/x
  3. Step 3: Cross multiply
    6,372.63x = 9,559.80 × 1,990.53
  4. Step 4: Simplify right side
    6,372.63x = 19,029,068.69
  5. Step 5: Solve for x
    x = 19,029,068.69/6,372.63
  6. Step 6: Final answer
    x = 2,986.06

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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.