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Finding the Fourth Proportional to 6,433.76, 8,883.62 and 4,939.31

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Solution

The fourth proportional to 6,433.76, 8,883.62 and 4,939.31 is: 6,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,433.76 : 8,883.62 = 4,939.31 : x
  2. Step 2: Convert to fraction form
    6,433.76/8,883.62 = 4,939.31/x
  3. Step 3: Cross multiply
    6,433.76x = 8,883.62 × 4,939.31
  4. Step 4: Simplify right side
    6,433.76x = 43,878,883.99
  5. Step 5: Solve for x
    x = 43,878,883.99/6,433.76
  6. Step 6: Final answer
    x = 6,820.10

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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.