Home / 8,628.13-12,942.19-2,785.60

Finding the Fourth Proportional to 8,628.13, 12,942.19 and 2,785.60

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Solution

The fourth proportional to 8,628.13, 12,942.19 and 2,785.60 is: 4,178.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.13 : 12,942.19 = 2,785.60 : x
  2. Step 2: Convert to fraction form
    8,628.13/12,942.19 = 2,785.60/x
  3. Step 3: Cross multiply
    8,628.13x = 12,942.19 × 2,785.60
  4. Step 4: Simplify right side
    8,628.13x = 36,051,703.49
  5. Step 5: Solve for x
    x = 36,051,703.49/8,628.13
  6. Step 6: Final answer
    x = 4,178.39

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Similar ratio
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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.