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Finding the Fourth Proportional to 7,686, 10,606.75 and 4,661.06

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Solution

The fourth proportional to 7,686, 10,606.75 and 4,661.06 is: 6,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686 : 10,606.75 = 4,661.06 : x
  2. Step 2: Convert to fraction form
    7,686/10,606.75 = 4,661.06/x
  3. Step 3: Cross multiply
    7,686x = 10,606.75 × 4,661.06
  4. Step 4: Simplify right side
    7,686x = 49,438,633.47
  5. Step 5: Solve for x
    x = 49,438,633.47/7,686
  6. Step 6: Final answer
    x = 6,432.30

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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.