Home / 7,648.30-11,445.72-6,620.41

Finding the Fourth Proportional to 7,648.30, 11,445.72 and 6,620.41

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Solution

The fourth proportional to 7,648.30, 11,445.72 and 6,620.41 is: 9,907.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,648.30 : 11,445.72 = 6,620.41 : x
  2. Step 2: Convert to fraction form
    7,648.30/11,445.72 = 6,620.41/x
  3. Step 3: Cross multiply
    7,648.30x = 11,445.72 × 6,620.41
  4. Step 4: Simplify right side
    7,648.30x = 75,775,359.15
  5. Step 5: Solve for x
    x = 75,775,359.15/7,648.30
  6. Step 6: Final answer
    x = 9,907.48

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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.