Home / 8,147.55-11,243.63-4,421.55

Finding the Fourth Proportional to 8,147.55, 11,243.63 and 4,421.55

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Solution

The fourth proportional to 8,147.55, 11,243.63 and 4,421.55 is: 6,101.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.55 : 11,243.63 = 4,421.55 : x
  2. Step 2: Convert to fraction form
    8,147.55/11,243.63 = 4,421.55/x
  3. Step 3: Cross multiply
    8,147.55x = 11,243.63 × 4,421.55
  4. Step 4: Simplify right side
    8,147.55x = 49,714,308.86
  5. Step 5: Solve for x
    x = 49,714,308.86/8,147.55
  6. Step 6: Final answer
    x = 6,101.75

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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.