Home / 8,520.04-12,768.39-6,438.34

Finding the Fourth Proportional to 8,520.04, 12,768.39 and 6,438.34

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Solution

The fourth proportional to 8,520.04, 12,768.39 and 6,438.34 is: 9,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.04 : 12,768.39 = 6,438.34 : x
  2. Step 2: Convert to fraction form
    8,520.04/12,768.39 = 6,438.34/x
  3. Step 3: Cross multiply
    8,520.04x = 12,768.39 × 6,438.34
  4. Step 4: Simplify right side
    8,520.04x = 82,207,236.07
  5. Step 5: Solve for x
    x = 82,207,236.07/8,520.04
  6. Step 6: Final answer
    x = 9,648.69

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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.