Home / 11,783.79-16,261.59-6,478.59

Finding the Fourth Proportional to 11,783.79, 16,261.59 and 6,478.59

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Solution

The fourth proportional to 11,783.79, 16,261.59 and 6,478.59 is: 8,940.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.79 : 16,261.59 = 6,478.59 : x
  2. Step 2: Convert to fraction form
    11,783.79/16,261.59 = 6,478.59/x
  3. Step 3: Cross multiply
    11,783.79x = 16,261.59 × 6,478.59
  4. Step 4: Simplify right side
    11,783.79x = 105,352,174.36
  5. Step 5: Solve for x
    x = 105,352,174.36/11,783.79
  6. Step 6: Final answer
    x = 8,940.43

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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.