Home / 3,478.18-5,213.76-2,180.56

Finding the Fourth Proportional to 3,478.18, 5,213.76 and 2,180.56

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Solution

The fourth proportional to 3,478.18, 5,213.76 and 2,180.56 is: 3,268.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.18 : 5,213.76 = 2,180.56 : x
  2. Step 2: Convert to fraction form
    3,478.18/5,213.76 = 2,180.56/x
  3. Step 3: Cross multiply
    3,478.18x = 5,213.76 × 2,180.56
  4. Step 4: Simplify right side
    3,478.18x = 11,368,916.51
  5. Step 5: Solve for x
    x = 11,368,916.51/3,478.18
  6. Step 6: Final answer
    x = 3,268.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.