Home / 5,412.60-8,118.90-3,936.60

Finding the Fourth Proportional to 5,412.60, 8,118.90 and 3,936.60

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Solution

The fourth proportional to 5,412.60, 8,118.90 and 3,936.60 is: 5,904.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.60 : 8,118.90 = 3,936.60 : x
  2. Step 2: Convert to fraction form
    5,412.60/8,118.90 = 3,936.60/x
  3. Step 3: Cross multiply
    5,412.60x = 8,118.90 × 3,936.60
  4. Step 4: Simplify right side
    5,412.60x = 31,960,861.74
  5. Step 5: Solve for x
    x = 31,960,861.74/5,412.60
  6. Step 6: Final answer
    x = 5,904.90

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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.