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Finding the Fourth Proportional to 3,312.48, 4,571.95 and 2,291.87

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Solution

The fourth proportional to 3,312.48, 4,571.95 and 2,291.87 is: 3,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.48 : 4,571.95 = 2,291.87 : x
  2. Step 2: Convert to fraction form
    3,312.48/4,571.95 = 2,291.87/x
  3. Step 3: Cross multiply
    3,312.48x = 4,571.95 × 2,291.87
  4. Step 4: Simplify right side
    3,312.48x = 10,478,315.05
  5. Step 5: Solve for x
    x = 10,478,315.05/3,312.48
  6. Step 6: Final answer
    x = 3,163.28

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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.