Home / 2,431.40-3,355.56-1,369.42

Finding the Fourth Proportional to 2,431.40, 3,355.56 and 1,369.42

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Solution

The fourth proportional to 2,431.40, 3,355.56 and 1,369.42 is: 1,889.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.40 : 3,355.56 = 1,369.42 : x
  2. Step 2: Convert to fraction form
    2,431.40/3,355.56 = 1,369.42/x
  3. Step 3: Cross multiply
    2,431.40x = 3,355.56 × 1,369.42
  4. Step 4: Simplify right side
    2,431.40x = 4,595,170.98
  5. Step 5: Solve for x
    x = 4,595,170.98/2,431.40
  6. Step 6: Final answer
    x = 1,889.93

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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.