Home / 5,258.62-7,890.36-1,971.28

Finding the Fourth Proportional to 5,258.62, 7,890.36 and 1,971.28

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Solution

The fourth proportional to 5,258.62, 7,890.36 and 1,971.28 is: 2,957.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,258.62 : 7,890.36 = 1,971.28 : x
  2. Step 2: Convert to fraction form
    5,258.62/7,890.36 = 1,971.28/x
  3. Step 3: Cross multiply
    5,258.62x = 7,890.36 × 1,971.28
  4. Step 4: Simplify right side
    5,258.62x = 15,554,108.86
  5. Step 5: Solve for x
    x = 15,554,108.86/5,258.62
  6. Step 6: Final answer
    x = 2,957.83

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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.