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Finding the Fourth Proportional to 2,592.36, 3,889 and 989.46

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Solution

The fourth proportional to 2,592.36, 3,889 and 989.46 is: 1,484.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,592.36 : 3,889 = 989.46 : x
  2. Step 2: Convert to fraction form
    2,592.36/3,889 = 989.46/x
  3. Step 3: Cross multiply
    2,592.36x = 3,889 × 989.46
  4. Step 4: Simplify right side
    2,592.36x = 3,848,009.94
  5. Step 5: Solve for x
    x = 3,848,009.94/2,592.36
  6. Step 6: Final answer
    x = 1,484.37

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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.