Home / 8,628.72-11,915.44-5,447.65

Finding the Fourth Proportional to 8,628.72, 11,915.44 and 5,447.65

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Solution

The fourth proportional to 8,628.72, 11,915.44 and 5,447.65 is: 7,522.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.72 : 11,915.44 = 5,447.65 : x
  2. Step 2: Convert to fraction form
    8,628.72/11,915.44 = 5,447.65/x
  3. Step 3: Cross multiply
    8,628.72x = 11,915.44 × 5,447.65
  4. Step 4: Simplify right side
    8,628.72x = 64,911,103.31
  5. Step 5: Solve for x
    x = 64,911,103.31/8,628.72
  6. Step 6: Final answer
    x = 7,522.68

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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.