Home / 8,415.82-12,630.39-4,717.36

Finding the Fourth Proportional to 8,415.82, 12,630.39 and 4,717.36

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Solution

The fourth proportional to 8,415.82, 12,630.39 and 4,717.36 is: 7,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.82 : 12,630.39 = 4,717.36 : x
  2. Step 2: Convert to fraction form
    8,415.82/12,630.39 = 4,717.36/x
  3. Step 3: Cross multiply
    8,415.82x = 12,630.39 × 4,717.36
  4. Step 4: Simplify right side
    8,415.82x = 59,582,096.57
  5. Step 5: Solve for x
    x = 59,582,096.57/8,415.82
  6. Step 6: Final answer
    x = 7,079.77

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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.