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Finding the Fourth Proportional to 1,782.99, 2,678.13 and 1,370.70

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Solution

The fourth proportional to 1,782.99, 2,678.13 and 1,370.70 is: 2,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.99 : 2,678.13 = 1,370.70 : x
  2. Step 2: Convert to fraction form
    1,782.99/2,678.13 = 1,370.70/x
  3. Step 3: Cross multiply
    1,782.99x = 2,678.13 × 1,370.70
  4. Step 4: Simplify right side
    1,782.99x = 3,670,912.79
  5. Step 5: Solve for x
    x = 3,670,912.79/1,782.99
  6. Step 6: Final answer
    x = 2,058.85

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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.