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Finding the Fourth Proportional to 5,258.32, 7,891 and 2,180.32

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Solution

The fourth proportional to 5,258.32, 7,891 and 2,180.32 is: 3,271.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,258.32 : 7,891 = 2,180.32 : x
  2. Step 2: Convert to fraction form
    5,258.32/7,891 = 2,180.32/x
  3. Step 3: Cross multiply
    5,258.32x = 7,891 × 2,180.32
  4. Step 4: Simplify right side
    5,258.32x = 17,204,905.12
  5. Step 5: Solve for x
    x = 17,204,905.12/5,258.32
  6. Step 6: Final answer
    x = 3,271.94

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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.