Home / 1,917.84-2,647.26-1,246.56

Finding the Fourth Proportional to 1,917.84, 2,647.26 and 1,246.56

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Solution

The fourth proportional to 1,917.84, 2,647.26 and 1,246.56 is: 1,720.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.84 : 2,647.26 = 1,246.56 : x
  2. Step 2: Convert to fraction form
    1,917.84/2,647.26 = 1,246.56/x
  3. Step 3: Cross multiply
    1,917.84x = 2,647.26 × 1,246.56
  4. Step 4: Simplify right side
    1,917.84x = 3,299,968.43
  5. Step 5: Solve for x
    x = 3,299,968.43/1,917.84
  6. Step 6: Final answer
    x = 1,720.67

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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.