Home / 2,740.34-4,106.66-2,121.21

Finding the Fourth Proportional to 2,740.34, 4,106.66 and 2,121.21

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Solution

The fourth proportional to 2,740.34, 4,106.66 and 2,121.21 is: 3,178.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.34 : 4,106.66 = 2,121.21 : x
  2. Step 2: Convert to fraction form
    2,740.34/4,106.66 = 2,121.21/x
  3. Step 3: Cross multiply
    2,740.34x = 4,106.66 × 2,121.21
  4. Step 4: Simplify right side
    2,740.34x = 8,711,077.65
  5. Step 5: Solve for x
    x = 8,711,077.65/2,740.34
  6. Step 6: Final answer
    x = 3,178.84

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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.