Home / 5,421.07-8,134.64-5,379.76

Finding the Fourth Proportional to 5,421.07, 8,134.64 and 5,379.76

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Solution

The fourth proportional to 5,421.07, 8,134.64 and 5,379.76 is: 8,072.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.07 : 8,134.64 = 5,379.76 : x
  2. Step 2: Convert to fraction form
    5,421.07/8,134.64 = 5,379.76/x
  3. Step 3: Cross multiply
    5,421.07x = 8,134.64 × 5,379.76
  4. Step 4: Simplify right side
    5,421.07x = 43,762,410.89
  5. Step 5: Solve for x
    x = 43,762,410.89/5,421.07
  6. Step 6: Final answer
    x = 8,072.65

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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.