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Finding the Fourth Proportional to 5,909.78, 8,865.21 and 2,986.22

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Solution

The fourth proportional to 5,909.78, 8,865.21 and 2,986.22 is: 4,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.78 : 8,865.21 = 2,986.22 : x
  2. Step 2: Convert to fraction form
    5,909.78/8,865.21 = 2,986.22/x
  3. Step 3: Cross multiply
    5,909.78x = 8,865.21 × 2,986.22
  4. Step 4: Simplify right side
    5,909.78x = 26,473,467.41
  5. Step 5: Solve for x
    x = 26,473,467.41/5,909.78
  6. Step 6: Final answer
    x = 4,479.60

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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.