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Finding the Fourth Proportional to 3,438.30, 5,157.53 and 841.26

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Solution

The fourth proportional to 3,438.30, 5,157.53 and 841.26 is: 1,261.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.30 : 5,157.53 = 841.26 : x
  2. Step 2: Convert to fraction form
    3,438.30/5,157.53 = 841.26/x
  3. Step 3: Cross multiply
    3,438.30x = 5,157.53 × 841.26
  4. Step 4: Simplify right side
    3,438.30x = 4,338,823.69
  5. Step 5: Solve for x
    x = 4,338,823.69/3,438.30
  6. Step 6: Final answer
    x = 1,261.91

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.