Home / 6,289.47-8,679.39-3,636.81

Finding the Fourth Proportional to 6,289.47, 8,679.39 and 3,636.81

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Solution

The fourth proportional to 6,289.47, 8,679.39 and 3,636.81 is: 5,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.47 : 8,679.39 = 3,636.81 : x
  2. Step 2: Convert to fraction form
    6,289.47/8,679.39 = 3,636.81/x
  3. Step 3: Cross multiply
    6,289.47x = 8,679.39 × 3,636.81
  4. Step 4: Simplify right side
    6,289.47x = 31,565,292.35
  5. Step 5: Solve for x
    x = 31,565,292.35/6,289.47
  6. Step 6: Final answer
    x = 5,018.75

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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.