Home / 2,718.35-4,080-1,680.36

Finding the Fourth Proportional to 2,718.35, 4,080 and 1,680.36

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Solution

The fourth proportional to 2,718.35, 4,080 and 1,680.36 is: 2,522.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.35 : 4,080 = 1,680.36 : x
  2. Step 2: Convert to fraction form
    2,718.35/4,080 = 1,680.36/x
  3. Step 3: Cross multiply
    2,718.35x = 4,080 × 1,680.36
  4. Step 4: Simplify right side
    2,718.35x = 6,855,868.80
  5. Step 5: Solve for x
    x = 6,855,868.80/2,718.35
  6. Step 6: Final answer
    x = 2,522.07

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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.