Home / 8,856.70-12,223.59-6,728.74

Finding the Fourth Proportional to 8,856.70, 12,223.59 and 6,728.74

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Solution

The fourth proportional to 8,856.70, 12,223.59 and 6,728.74 is: 9,286.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.70 : 12,223.59 = 6,728.74 : x
  2. Step 2: Convert to fraction form
    8,856.70/12,223.59 = 6,728.74/x
  3. Step 3: Cross multiply
    8,856.70x = 12,223.59 × 6,728.74
  4. Step 4: Simplify right side
    8,856.70x = 82,249,358.98
  5. Step 5: Solve for x
    x = 82,249,358.98/8,856.70
  6. Step 6: Final answer
    x = 9,286.68

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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.