Home / 9,261.48-12,769.68-6,431.28

Finding the Fourth Proportional to 9,261.48, 12,769.68 and 6,431.28

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Solution

The fourth proportional to 9,261.48, 12,769.68 and 6,431.28 is: 8,867.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,261.48 : 12,769.68 = 6,431.28 : x
  2. Step 2: Convert to fraction form
    9,261.48/12,769.68 = 6,431.28/x
  3. Step 3: Cross multiply
    9,261.48x = 12,769.68 × 6,431.28
  4. Step 4: Simplify right side
    9,261.48x = 82,125,387.59
  5. Step 5: Solve for x
    x = 82,125,387.59/9,261.48
  6. Step 6: Final answer
    x = 8,867.42

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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.