Home / 5,180.78-7,149.63-2,823.07

Finding the Fourth Proportional to 5,180.78, 7,149.63 and 2,823.07

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Solution

The fourth proportional to 5,180.78, 7,149.63 and 2,823.07 is: 3,895.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.78 : 7,149.63 = 2,823.07 : x
  2. Step 2: Convert to fraction form
    5,180.78/7,149.63 = 2,823.07/x
  3. Step 3: Cross multiply
    5,180.78x = 7,149.63 × 2,823.07
  4. Step 4: Simplify right side
    5,180.78x = 20,183,905.96
  5. Step 5: Solve for x
    x = 20,183,905.96/5,180.78
  6. Step 6: Final answer
    x = 3,895.92

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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.