Home / 1,211.80-1,818.06-346.12

Finding the Fourth Proportional to 1,211.80, 1,818.06 and 346.12

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Solution

The fourth proportional to 1,211.80, 1,818.06 and 346.12 is: 519.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.80 : 1,818.06 = 346.12 : x
  2. Step 2: Convert to fraction form
    1,211.80/1,818.06 = 346.12/x
  3. Step 3: Cross multiply
    1,211.80x = 1,818.06 × 346.12
  4. Step 4: Simplify right side
    1,211.80x = 629,266.93
  5. Step 5: Solve for x
    x = 629,266.93/1,211.80
  6. Step 6: Final answer
    x = 519.28

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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.