Home / 2,942.55-4,063.36-2,195.21

Finding the Fourth Proportional to 2,942.55, 4,063.36 and 2,195.21

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Solution

The fourth proportional to 2,942.55, 4,063.36 and 2,195.21 is: 3,031.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.55 : 4,063.36 = 2,195.21 : x
  2. Step 2: Convert to fraction form
    2,942.55/4,063.36 = 2,195.21/x
  3. Step 3: Cross multiply
    2,942.55x = 4,063.36 × 2,195.21
  4. Step 4: Simplify right side
    2,942.55x = 8,919,925.35
  5. Step 5: Solve for x
    x = 8,919,925.35/2,942.55
  6. Step 6: Final answer
    x = 3,031.36

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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.