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Finding the Fourth Proportional to 5,887.78, 8,826.20 and 1,989.48

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Solution

The fourth proportional to 5,887.78, 8,826.20 and 1,989.48 is: 2,982.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,887.78 : 8,826.20 = 1,989.48 : x
  2. Step 2: Convert to fraction form
    5,887.78/8,826.20 = 1,989.48/x
  3. Step 3: Cross multiply
    5,887.78x = 8,826.20 × 1,989.48
  4. Step 4: Simplify right side
    5,887.78x = 17,559,548.38
  5. Step 5: Solve for x
    x = 17,559,548.38/5,887.78
  6. Step 6: Final answer
    x = 2,982.37

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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.