Home / 2,431.35-3,355.28-1,369.08

Finding the Fourth Proportional to 2,431.35, 3,355.28 and 1,369.08

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Solution

The fourth proportional to 2,431.35, 3,355.28 and 1,369.08 is: 1,889.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.35 : 3,355.28 = 1,369.08 : x
  2. Step 2: Convert to fraction form
    2,431.35/3,355.28 = 1,369.08/x
  3. Step 3: Cross multiply
    2,431.35x = 3,355.28 × 1,369.08
  4. Step 4: Simplify right side
    2,431.35x = 4,593,639.90
  5. Step 5: Solve for x
    x = 4,593,639.90/2,431.35
  6. Step 6: Final answer
    x = 1,889.34

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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.