Home / 2,515.64-3,471.44-1,396.55

Finding the Fourth Proportional to 2,515.64, 3,471.44 and 1,396.55

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Solution

The fourth proportional to 2,515.64, 3,471.44 and 1,396.55 is: 1,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.64 : 3,471.44 = 1,396.55 : x
  2. Step 2: Convert to fraction form
    2,515.64/3,471.44 = 1,396.55/x
  3. Step 3: Cross multiply
    2,515.64x = 3,471.44 × 1,396.55
  4. Step 4: Simplify right side
    2,515.64x = 4,848,015.19
  5. Step 5: Solve for x
    x = 4,848,015.19/2,515.64
  6. Step 6: Final answer
    x = 1,927.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.