Home / 8,628.16-11,877.49-6,385.81

Finding the Fourth Proportional to 8,628.16, 11,877.49 and 6,385.81

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Solution

The fourth proportional to 8,628.16, 11,877.49 and 6,385.81 is: 8,790.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.16 : 11,877.49 = 6,385.81 : x
  2. Step 2: Convert to fraction form
    8,628.16/11,877.49 = 6,385.81/x
  3. Step 3: Cross multiply
    8,628.16x = 11,877.49 × 6,385.81
  4. Step 4: Simplify right side
    8,628.16x = 75,847,394.42
  5. Step 5: Solve for x
    x = 75,847,394.42/8,628.16
  6. Step 6: Final answer
    x = 8,790.68

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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.