Home / 2,438.33-3,365.12-1,390.73

Finding the Fourth Proportional to 2,438.33, 3,365.12 and 1,390.73

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Solution

The fourth proportional to 2,438.33, 3,365.12 and 1,390.73 is: 1,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.33 : 3,365.12 = 1,390.73 : x
  2. Step 2: Convert to fraction form
    2,438.33/3,365.12 = 1,390.73/x
  3. Step 3: Cross multiply
    2,438.33x = 3,365.12 × 1,390.73
  4. Step 4: Simplify right side
    2,438.33x = 4,679,973.34
  5. Step 5: Solve for x
    x = 4,679,973.34/2,438.33
  6. Step 6: Final answer
    x = 1,919.34

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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.