Home / 8,857.06-12,215.46-6,464.34

Finding the Fourth Proportional to 8,857.06, 12,215.46 and 6,464.34

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Solution

The fourth proportional to 8,857.06, 12,215.46 and 6,464.34 is: 8,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.06 : 12,215.46 = 6,464.34 : x
  2. Step 2: Convert to fraction form
    8,857.06/12,215.46 = 6,464.34/x
  3. Step 3: Cross multiply
    8,857.06x = 12,215.46 × 6,464.34
  4. Step 4: Simplify right side
    8,857.06x = 78,964,886.70
  5. Step 5: Solve for x
    x = 78,964,886.70/8,857.06
  6. Step 6: Final answer
    x = 8,915.48

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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.