Home / 2,717.28-4,072.68-1,485

Finding the Fourth Proportional to 2,717.28, 4,072.68 and 1,485

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Solution

The fourth proportional to 2,717.28, 4,072.68 and 1,485 is: 2,225.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.28 : 4,072.68 = 1,485 : x
  2. Step 2: Convert to fraction form
    2,717.28/4,072.68 = 1,485/x
  3. Step 3: Cross multiply
    2,717.28x = 4,072.68 × 1,485
  4. Step 4: Simplify right side
    2,717.28x = 6,047,929.80
  5. Step 5: Solve for x
    x = 6,047,929.80/2,717.28
  6. Step 6: Final answer
    x = 2,225.73

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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.