Home / 5,638.12-8,459.34-2,127.88

Finding the Fourth Proportional to 5,638.12, 8,459.34 and 2,127.88

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Solution

The fourth proportional to 5,638.12, 8,459.34 and 2,127.88 is: 3,192.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.12 : 8,459.34 = 2,127.88 : x
  2. Step 2: Convert to fraction form
    5,638.12/8,459.34 = 2,127.88/x
  3. Step 3: Cross multiply
    5,638.12x = 8,459.34 × 2,127.88
  4. Step 4: Simplify right side
    5,638.12x = 18,000,460.40
  5. Step 5: Solve for x
    x = 18,000,460.40/5,638.12
  6. Step 6: Final answer
    x = 3,192.64

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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.