Home / 2,775.45-4,162.56-1,313.81

Finding the Fourth Proportional to 2,775.45, 4,162.56 and 1,313.81

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Solution

The fourth proportional to 2,775.45, 4,162.56 and 1,313.81 is: 1,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.45 : 4,162.56 = 1,313.81 : x
  2. Step 2: Convert to fraction form
    2,775.45/4,162.56 = 1,313.81/x
  3. Step 3: Cross multiply
    2,775.45x = 4,162.56 × 1,313.81
  4. Step 4: Simplify right side
    2,775.45x = 5,468,812.95
  5. Step 5: Solve for x
    x = 5,468,812.95/2,775.45
  6. Step 6: Final answer
    x = 1,970.42

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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.