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Finding the Fourth Proportional to 2,503.75, 3,455.18 and 1,399.75

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Solution

The fourth proportional to 2,503.75, 3,455.18 and 1,399.75 is: 1,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,503.75 : 3,455.18 = 1,399.75 : x
  2. Step 2: Convert to fraction form
    2,503.75/3,455.18 = 1,399.75/x
  3. Step 3: Cross multiply
    2,503.75x = 3,455.18 × 1,399.75
  4. Step 4: Simplify right side
    2,503.75x = 4,836,388.21
  5. Step 5: Solve for x
    x = 4,836,388.21/2,503.75
  6. Step 6: Final answer
    x = 1,931.66

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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.