Home / 6,261.42-8,638.80-3,608.47

Finding the Fourth Proportional to 6,261.42, 8,638.80 and 3,608.47

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Solution

The fourth proportional to 6,261.42, 8,638.80 and 3,608.47 is: 4,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.42 : 8,638.80 = 3,608.47 : x
  2. Step 2: Convert to fraction form
    6,261.42/8,638.80 = 3,608.47/x
  3. Step 3: Cross multiply
    6,261.42x = 8,638.80 × 3,608.47
  4. Step 4: Simplify right side
    6,261.42x = 31,172,807.44
  5. Step 5: Solve for x
    x = 31,172,807.44/6,261.42
  6. Step 6: Final answer
    x = 4,978.55

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1.5x scale

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.