Home / 8,526.36-12,789.18-4,142.64

Finding the Fourth Proportional to 8,526.36, 12,789.18 and 4,142.64

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Solution

The fourth proportional to 8,526.36, 12,789.18 and 4,142.64 is: 6,213.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,526.36 : 12,789.18 = 4,142.64 : x
  2. Step 2: Convert to fraction form
    8,526.36/12,789.18 = 4,142.64/x
  3. Step 3: Cross multiply
    8,526.36x = 12,789.18 × 4,142.64
  4. Step 4: Simplify right side
    8,526.36x = 52,980,968.64
  5. Step 5: Solve for x
    x = 52,980,968.64/8,526.36
  6. Step 6: Final answer
    x = 6,213.79

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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.