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Finding the Fourth Proportional to 2,491.99, 3,440.34 and 1,959.82

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Solution

The fourth proportional to 2,491.99, 3,440.34 and 1,959.82 is: 2,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.99 : 3,440.34 = 1,959.82 : x
  2. Step 2: Convert to fraction form
    2,491.99/3,440.34 = 1,959.82/x
  3. Step 3: Cross multiply
    2,491.99x = 3,440.34 × 1,959.82
  4. Step 4: Simplify right side
    2,491.99x = 6,742,438.54
  5. Step 5: Solve for x
    x = 6,742,438.54/2,491.99
  6. Step 6: Final answer
    x = 2,705.65

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1.5x scale

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.