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Finding the Fourth Proportional to 5,886.21, 8,830.53 and 1,990.92

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Solution

The fourth proportional to 5,886.21, 8,830.53 and 1,990.92 is: 2,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,886.21 : 8,830.53 = 1,990.92 : x
  2. Step 2: Convert to fraction form
    5,886.21/8,830.53 = 1,990.92/x
  3. Step 3: Cross multiply
    5,886.21x = 8,830.53 × 1,990.92
  4. Step 4: Simplify right side
    5,886.21x = 17,580,878.79
  5. Step 5: Solve for x
    x = 17,580,878.79/5,886.21
  6. Step 6: Final answer
    x = 2,986.79

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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.