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Finding the Fourth Proportional to 5,589.70, 8,378.92 and 1,890.93

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Solution

The fourth proportional to 5,589.70, 8,378.92 and 1,890.93 is: 2,834.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,589.70 : 8,378.92 = 1,890.93 : x
  2. Step 2: Convert to fraction form
    5,589.70/8,378.92 = 1,890.93/x
  3. Step 3: Cross multiply
    5,589.70x = 8,378.92 × 1,890.93
  4. Step 4: Simplify right side
    5,589.70x = 15,843,951.20
  5. Step 5: Solve for x
    x = 15,843,951.20/5,589.70
  6. Step 6: Final answer
    x = 2,834.49

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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.