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Finding the Fourth Proportional to 3,316.90, 4,575.42 and 2,072.74

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Solution

The fourth proportional to 3,316.90, 4,575.42 and 2,072.74 is: 2,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316.90 : 4,575.42 = 2,072.74 : x
  2. Step 2: Convert to fraction form
    3,316.90/4,575.42 = 2,072.74/x
  3. Step 3: Cross multiply
    3,316.90x = 4,575.42 × 2,072.74
  4. Step 4: Simplify right side
    3,316.90x = 9,483,674.80
  5. Step 5: Solve for x
    x = 9,483,674.80/3,316.90
  6. Step 6: Final answer
    x = 2,859.20

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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.