Home / 8,857.39-12,215.85-5,318.08

Finding the Fourth Proportional to 8,857.39, 12,215.85 and 5,318.08

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Solution

The fourth proportional to 8,857.39, 12,215.85 and 5,318.08 is: 7,334.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.39 : 12,215.85 = 5,318.08 : x
  2. Step 2: Convert to fraction form
    8,857.39/12,215.85 = 5,318.08/x
  3. Step 3: Cross multiply
    8,857.39x = 12,215.85 × 5,318.08
  4. Step 4: Simplify right side
    8,857.39x = 64,964,867.57
  5. Step 5: Solve for x
    x = 64,964,867.57/8,857.39
  6. Step 6: Final answer
    x = 7,334.54

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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.