Home / 8,421.07-11,620.58-4,644.28

Finding the Fourth Proportional to 8,421.07, 11,620.58 and 4,644.28

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Solution

The fourth proportional to 8,421.07, 11,620.58 and 4,644.28 is: 6,408.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.07 : 11,620.58 = 4,644.28 : x
  2. Step 2: Convert to fraction form
    8,421.07/11,620.58 = 4,644.28/x
  3. Step 3: Cross multiply
    8,421.07x = 11,620.58 × 4,644.28
  4. Step 4: Simplify right side
    8,421.07x = 53,969,145.96
  5. Step 5: Solve for x
    x = 53,969,145.96/8,421.07
  6. Step 6: Final answer
    x = 6,408.83

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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.