Home / 2,688.67-4,036.29-1,811.44

Finding the Fourth Proportional to 2,688.67, 4,036.29 and 1,811.44

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Solution

The fourth proportional to 2,688.67, 4,036.29 and 1,811.44 is: 2,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.67 : 4,036.29 = 1,811.44 : x
  2. Step 2: Convert to fraction form
    2,688.67/4,036.29 = 1,811.44/x
  3. Step 3: Cross multiply
    2,688.67x = 4,036.29 × 1,811.44
  4. Step 4: Simplify right side
    2,688.67x = 7,311,497.16
  5. Step 5: Solve for x
    x = 7,311,497.16/2,688.67
  6. Step 6: Final answer
    x = 2,719.37

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1.5x scale

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.