Home / 3,865.54-5,371.45-3,825.40

Finding the Fourth Proportional to 3,865.54, 5,371.45 and 3,825.40

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Solution

The fourth proportional to 3,865.54, 5,371.45 and 3,825.40 is: 5,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.54 : 5,371.45 = 3,825.40 : x
  2. Step 2: Convert to fraction form
    3,865.54/5,371.45 = 3,825.40/x
  3. Step 3: Cross multiply
    3,865.54x = 5,371.45 × 3,825.40
  4. Step 4: Simplify right side
    3,865.54x = 20,547,944.83
  5. Step 5: Solve for x
    x = 20,547,944.83/3,865.54
  6. Step 6: Final answer
    x = 5,315.67

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.