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Finding the Fourth Proportional to 3,164.60, 4,421.80 and 3,164.60

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Solution

The fourth proportional to 3,164.60, 4,421.80 and 3,164.60 is: 4,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,164.60 : 4,421.80 = 3,164.60 : x
  2. Step 2: Convert to fraction form
    3,164.60/4,421.80 = 3,164.60/x
  3. Step 3: Cross multiply
    3,164.60x = 4,421.80 × 3,164.60
  4. Step 4: Simplify right side
    3,164.60x = 13,993,228.28
  5. Step 5: Solve for x
    x = 13,993,228.28/3,164.60
  6. Step 6: Final answer
    x = 4,421.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.