Home / 9,786.72-13,502.14-6,431.35

Finding the Fourth Proportional to 9,786.72, 13,502.14 and 6,431.35

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Solution

The fourth proportional to 9,786.72, 13,502.14 and 6,431.35 is: 8,872.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,786.72 : 13,502.14 = 6,431.35 : x
  2. Step 2: Convert to fraction form
    9,786.72/13,502.14 = 6,431.35/x
  3. Step 3: Cross multiply
    9,786.72x = 13,502.14 × 6,431.35
  4. Step 4: Simplify right side
    9,786.72x = 86,836,999.75
  5. Step 5: Solve for x
    x = 86,836,999.75/9,786.72
  6. Step 6: Final answer
    x = 8,872.94

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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.