Home / 8,628.91-11,915.70-5,447.84

Finding the Fourth Proportional to 8,628.91, 11,915.70 and 5,447.84

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Solution

The fourth proportional to 8,628.91, 11,915.70 and 5,447.84 is: 7,522.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.91 : 11,915.70 = 5,447.84 : x
  2. Step 2: Convert to fraction form
    8,628.91/11,915.70 = 5,447.84/x
  3. Step 3: Cross multiply
    8,628.91x = 11,915.70 × 5,447.84
  4. Step 4: Simplify right side
    8,628.91x = 64,914,747.08
  5. Step 5: Solve for x
    x = 64,914,747.08/8,628.91
  6. Step 6: Final answer
    x = 7,522.94

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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.