Home / 3,478.23-5,213.70-2,161.98

Finding the Fourth Proportional to 3,478.23, 5,213.70 and 2,161.98

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Solution

The fourth proportional to 3,478.23, 5,213.70 and 2,161.98 is: 3,240.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.23 : 5,213.70 = 2,161.98 : x
  2. Step 2: Convert to fraction form
    3,478.23/5,213.70 = 2,161.98/x
  3. Step 3: Cross multiply
    3,478.23x = 5,213.70 × 2,161.98
  4. Step 4: Simplify right side
    3,478.23x = 11,271,915.13
  5. Step 5: Solve for x
    x = 11,271,915.13/3,478.23
  6. Step 6: Final answer
    x = 3,240.70

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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.