Home / 8,628.11-12,960.59-6,178.67

Finding the Fourth Proportional to 8,628.11, 12,960.59 and 6,178.67

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Solution

The fourth proportional to 8,628.11, 12,960.59 and 6,178.67 is: 9,281.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.11 : 12,960.59 = 6,178.67 : x
  2. Step 2: Convert to fraction form
    8,628.11/12,960.59 = 6,178.67/x
  3. Step 3: Cross multiply
    8,628.11x = 12,960.59 × 6,178.67
  4. Step 4: Simplify right side
    8,628.11x = 80,079,112.92
  5. Step 5: Solve for x
    x = 80,079,112.92/8,628.11
  6. Step 6: Final answer
    x = 9,281.19

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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.