Home / 5,423.90-7,484.74-3,186

Finding the Fourth Proportional to 5,423.90, 7,484.74 and 3,186

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Solution

The fourth proportional to 5,423.90, 7,484.74 and 3,186 is: 4,396.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.90 : 7,484.74 = 3,186 : x
  2. Step 2: Convert to fraction form
    5,423.90/7,484.74 = 3,186/x
  3. Step 3: Cross multiply
    5,423.90x = 7,484.74 × 3,186
  4. Step 4: Simplify right side
    5,423.90x = 23,846,373.68
  5. Step 5: Solve for x
    x = 23,846,373.68/5,423.90
  6. Step 6: Final answer
    x = 4,396.54

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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.