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Finding the Fourth Proportional to 5,990.78, 8,987.79 and 3,395.54

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Solution

The fourth proportional to 5,990.78, 8,987.79 and 3,395.54 is: 5,094.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,990.78 : 8,987.79 = 3,395.54 : x
  2. Step 2: Convert to fraction form
    5,990.78/8,987.79 = 3,395.54/x
  3. Step 3: Cross multiply
    5,990.78x = 8,987.79 × 3,395.54
  4. Step 4: Simplify right side
    5,990.78x = 30,518,400.46
  5. Step 5: Solve for x
    x = 30,518,400.46/5,990.78
  6. Step 6: Final answer
    x = 5,094.23

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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.