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Finding the Fourth Proportional to 6,475.48, 8,940.44 and 4,980.64

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Solution

The fourth proportional to 6,475.48, 8,940.44 and 4,980.64 is: 6,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,475.48 : 8,940.44 = 4,980.64 : x
  2. Step 2: Convert to fraction form
    6,475.48/8,940.44 = 4,980.64/x
  3. Step 3: Cross multiply
    6,475.48x = 8,940.44 × 4,980.64
  4. Step 4: Simplify right side
    6,475.48x = 44,529,113.08
  5. Step 5: Solve for x
    x = 44,529,113.08/6,475.48
  6. Step 6: Final answer
    x = 6,876.57

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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.