Home / 5,909.80-8,148.75-4,415.20

Finding the Fourth Proportional to 5,909.80, 8,148.75 and 4,415.20

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Solution

The fourth proportional to 5,909.80, 8,148.75 and 4,415.20 is: 6,087.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.80 : 8,148.75 = 4,415.20 : x
  2. Step 2: Convert to fraction form
    5,909.80/8,148.75 = 4,415.20/x
  3. Step 3: Cross multiply
    5,909.80x = 8,148.75 × 4,415.20
  4. Step 4: Simplify right side
    5,909.80x = 35,978,361
  5. Step 5: Solve for x
    x = 35,978,361/5,909.80
  6. Step 6: Final answer
    x = 6,087.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.