Home / 9,719.78-13,398.94-6,878.32

Finding the Fourth Proportional to 9,719.78, 13,398.94 and 6,878.32

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Solution

The fourth proportional to 9,719.78, 13,398.94 and 6,878.32 is: 9,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,719.78 : 13,398.94 = 6,878.32 : x
  2. Step 2: Convert to fraction form
    9,719.78/13,398.94 = 6,878.32/x
  3. Step 3: Cross multiply
    9,719.78x = 13,398.94 × 6,878.32
  4. Step 4: Simplify right side
    9,719.78x = 92,162,196.98
  5. Step 5: Solve for x
    x = 92,162,196.98/9,719.78
  6. Step 6: Final answer
    x = 9,481.92

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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.