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Finding the Fourth Proportional to 7,647, 10,554.60 and 4,504.20

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Solution

The fourth proportional to 7,647, 10,554.60 and 4,504.20 is: 6,216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647 : 10,554.60 = 4,504.20 : x
  2. Step 2: Convert to fraction form
    7,647/10,554.60 = 4,504.20/x
  3. Step 3: Cross multiply
    7,647x = 10,554.60 × 4,504.20
  4. Step 4: Simplify right side
    7,647x = 47,540,029.32
  5. Step 5: Solve for x
    x = 47,540,029.32/7,647
  6. Step 6: Final answer
    x = 6,216.82

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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.