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Finding the Fourth Proportional to 7,716.71, 10,649 and 4,359.36

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Solution

The fourth proportional to 7,716.71, 10,649 and 4,359.36 is: 6,015.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.71 : 10,649 = 4,359.36 : x
  2. Step 2: Convert to fraction form
    7,716.71/10,649 = 4,359.36/x
  3. Step 3: Cross multiply
    7,716.71x = 10,649 × 4,359.36
  4. Step 4: Simplify right side
    7,716.71x = 46,422,824.64
  5. Step 5: Solve for x
    x = 46,422,824.64/7,716.71
  6. Step 6: Final answer
    x = 6,015.89

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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.