Home / 8,638.04-12,958.28-3,090.22

Finding the Fourth Proportional to 8,638.04, 12,958.28 and 3,090.22

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Solution

The fourth proportional to 8,638.04, 12,958.28 and 3,090.22 is: 4,635.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.04 : 12,958.28 = 3,090.22 : x
  2. Step 2: Convert to fraction form
    8,638.04/12,958.28 = 3,090.22/x
  3. Step 3: Cross multiply
    8,638.04x = 12,958.28 × 3,090.22
  4. Step 4: Simplify right side
    8,638.04x = 40,043,936.02
  5. Step 5: Solve for x
    x = 40,043,936.02/8,638.04
  6. Step 6: Final answer
    x = 4,635.77

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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.