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Finding the Fourth Proportional to 5,389.87, 8,084.94 and 1,927.12

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Solution

The fourth proportional to 5,389.87, 8,084.94 and 1,927.12 is: 2,890.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.87 : 8,084.94 = 1,927.12 : x
  2. Step 2: Convert to fraction form
    5,389.87/8,084.94 = 1,927.12/x
  3. Step 3: Cross multiply
    5,389.87x = 8,084.94 × 1,927.12
  4. Step 4: Simplify right side
    5,389.87x = 15,580,649.57
  5. Step 5: Solve for x
    x = 15,580,649.57/5,389.87
  6. Step 6: Final answer
    x = 2,890.73

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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.