Home / 1,392.08-2,096.37-1,211.65

Finding the Fourth Proportional to 1,392.08, 2,096.37 and 1,211.65

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Solution

The fourth proportional to 1,392.08, 2,096.37 and 1,211.65 is: 1,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.08 : 2,096.37 = 1,211.65 : x
  2. Step 2: Convert to fraction form
    1,392.08/2,096.37 = 1,211.65/x
  3. Step 3: Cross multiply
    1,392.08x = 2,096.37 × 1,211.65
  4. Step 4: Simplify right side
    1,392.08x = 2,540,056.23
  5. Step 5: Solve for x
    x = 2,540,056.23/1,392.08
  6. Step 6: Final answer
    x = 1,824.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.