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Finding the Fourth Proportional to 6,470.75, 8,917.80 and 4,699.28

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Solution

The fourth proportional to 6,470.75, 8,917.80 and 4,699.28 is: 6,476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,470.75 : 8,917.80 = 4,699.28 : x
  2. Step 2: Convert to fraction form
    6,470.75/8,917.80 = 4,699.28/x
  3. Step 3: Cross multiply
    6,470.75x = 8,917.80 × 4,699.28
  4. Step 4: Simplify right side
    6,470.75x = 41,907,243.86
  5. Step 5: Solve for x
    x = 41,907,243.86/6,470.75
  6. Step 6: Final answer
    x = 6,476.41

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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.