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Finding the Fourth Proportional to 5,172.93, 7,759.31 and 1,886.00

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Solution

The fourth proportional to 5,172.93, 7,759.31 and 1,886.00 is: 2,828.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.93 : 7,759.31 = 1,886.00 : x
  2. Step 2: Convert to fraction form
    5,172.93/7,759.31 = 1,886.00/x
  3. Step 3: Cross multiply
    5,172.93x = 7,759.31 × 1,886.00
  4. Step 4: Simplify right side
    5,172.93x = 14,634,010.43
  5. Step 5: Solve for x
    x = 14,634,010.43/5,172.93
  6. Step 6: Final answer
    x = 2,828.96

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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.