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Finding the Fourth Proportional to 2,452.99, 3,384.30 and 1,390.64

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Solution

The fourth proportional to 2,452.99, 3,384.30 and 1,390.64 is: 1,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.99 : 3,384.30 = 1,390.64 : x
  2. Step 2: Convert to fraction form
    2,452.99/3,384.30 = 1,390.64/x
  3. Step 3: Cross multiply
    2,452.99x = 3,384.30 × 1,390.64
  4. Step 4: Simplify right side
    2,452.99x = 4,706,336.00
  5. Step 5: Solve for x
    x = 4,706,336.00/2,452.99
  6. Step 6: Final answer
    x = 1,918.61

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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.