Home / 5,421.60-8,129.70-2,496.60

Finding the Fourth Proportional to 5,421.60, 8,129.70 and 2,496.60

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Solution

The fourth proportional to 5,421.60, 8,129.70 and 2,496.60 is: 3,743.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.60 : 8,129.70 = 2,496.60 : x
  2. Step 2: Convert to fraction form
    5,421.60/8,129.70 = 2,496.60/x
  3. Step 3: Cross multiply
    5,421.60x = 8,129.70 × 2,496.60
  4. Step 4: Simplify right side
    5,421.60x = 20,296,609.02
  5. Step 5: Solve for x
    x = 20,296,609.02/5,421.60
  6. Step 6: Final answer
    x = 3,743.66

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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.