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Finding the Fourth Proportional to 5,578.99, 8,368.45 and 1,418.96

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Solution

The fourth proportional to 5,578.99, 8,368.45 and 1,418.96 is: 2,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.99 : 8,368.45 = 1,418.96 : x
  2. Step 2: Convert to fraction form
    5,578.99/8,368.45 = 1,418.96/x
  3. Step 3: Cross multiply
    5,578.99x = 8,368.45 × 1,418.96
  4. Step 4: Simplify right side
    5,578.99x = 11,874,496.61
  5. Step 5: Solve for x
    x = 11,874,496.61/5,578.99
  6. Step 6: Final answer
    x = 2,128.43

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1.5x scale

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.