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Finding the Fourth Proportional to 5,751.72, 7,939.62 and 4,075.56

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Solution

The fourth proportional to 5,751.72, 7,939.62 and 4,075.56 is: 5,625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751.72 : 7,939.62 = 4,075.56 : x
  2. Step 2: Convert to fraction form
    5,751.72/7,939.62 = 4,075.56/x
  3. Step 3: Cross multiply
    5,751.72x = 7,939.62 × 4,075.56
  4. Step 4: Simplify right side
    5,751.72x = 32,358,397.69
  5. Step 5: Solve for x
    x = 32,358,397.69/5,751.72
  6. Step 6: Final answer
    x = 5,625.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.