Home / 6,289.28-8,679.08-3,636.64

Finding the Fourth Proportional to 6,289.28, 8,679.08 and 3,636.64

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Solution

The fourth proportional to 6,289.28, 8,679.08 and 3,636.64 is: 5,018.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.28 : 8,679.08 = 3,636.64 : x
  2. Step 2: Convert to fraction form
    6,289.28/8,679.08 = 3,636.64/x
  3. Step 3: Cross multiply
    6,289.28x = 8,679.08 × 3,636.64
  4. Step 4: Simplify right side
    6,289.28x = 31,562,689.49
  5. Step 5: Solve for x
    x = 31,562,689.49/6,289.28
  6. Step 6: Final answer
    x = 5,018.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.