Home / 2,438.78-3,365.44-1,376.58

Finding the Fourth Proportional to 2,438.78, 3,365.44 and 1,376.58

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Solution

The fourth proportional to 2,438.78, 3,365.44 and 1,376.58 is: 1,899.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.78 : 3,365.44 = 1,376.58 : x
  2. Step 2: Convert to fraction form
    2,438.78/3,365.44 = 1,376.58/x
  3. Step 3: Cross multiply
    2,438.78x = 3,365.44 × 1,376.58
  4. Step 4: Simplify right side
    2,438.78x = 4,632,787.64
  5. Step 5: Solve for x
    x = 4,632,787.64/2,438.78
  6. Step 6: Final answer
    x = 1,899.64

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1.5x scale

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.