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Finding the Fourth Proportional to 1,768.98, 2,440.19 and 1,559.67

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Solution

The fourth proportional to 1,768.98, 2,440.19 and 1,559.67 is: 2,151.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.98 : 2,440.19 = 1,559.67 : x
  2. Step 2: Convert to fraction form
    1,768.98/2,440.19 = 1,559.67/x
  3. Step 3: Cross multiply
    1,768.98x = 2,440.19 × 1,559.67
  4. Step 4: Simplify right side
    1,768.98x = 3,805,883.34
  5. Step 5: Solve for x
    x = 3,805,883.34/1,768.98
  6. Step 6: Final answer
    x = 2,151.46

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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.