Home / 9,331.32-12,878.82-6,345.12

Finding the Fourth Proportional to 9,331.32, 12,878.82 and 6,345.12

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Solution

The fourth proportional to 9,331.32, 12,878.82 and 6,345.12 is: 8,757.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.32 : 12,878.82 = 6,345.12 : x
  2. Step 2: Convert to fraction form
    9,331.32/12,878.82 = 6,345.12/x
  3. Step 3: Cross multiply
    9,331.32x = 12,878.82 × 6,345.12
  4. Step 4: Simplify right side
    9,331.32x = 81,717,658.36
  5. Step 5: Solve for x
    x = 81,717,658.36/9,331.32
  6. Step 6: Final answer
    x = 8,757.35

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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.