Home / 3,487.21-4,812.15-1,915.27

Finding the Fourth Proportional to 3,487.21, 4,812.15 and 1,915.27

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Solution

The fourth proportional to 3,487.21, 4,812.15 and 1,915.27 is: 2,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.21 : 4,812.15 = 1,915.27 : x
  2. Step 2: Convert to fraction form
    3,487.21/4,812.15 = 1,915.27/x
  3. Step 3: Cross multiply
    3,487.21x = 4,812.15 × 1,915.27
  4. Step 4: Simplify right side
    3,487.21x = 9,216,566.53
  5. Step 5: Solve for x
    x = 9,216,566.53/3,487.21
  6. Step 6: Final answer
    x = 2,642.96

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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.