Home / 2,940.11-4,056.63-1,680.79

Finding the Fourth Proportional to 2,940.11, 4,056.63 and 1,680.79

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Solution

The fourth proportional to 2,940.11, 4,056.63 and 1,680.79 is: 2,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.11 : 4,056.63 = 1,680.79 : x
  2. Step 2: Convert to fraction form
    2,940.11/4,056.63 = 1,680.79/x
  3. Step 3: Cross multiply
    2,940.11x = 4,056.63 × 1,680.79
  4. Step 4: Simplify right side
    2,940.11x = 6,818,322.85
  5. Step 5: Solve for x
    x = 6,818,322.85/2,940.11
  6. Step 6: Final answer
    x = 2,319.07

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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.