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Finding the Fourth Proportional to 6,326.78, 8,742.56 and 5,484.78

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Solution

The fourth proportional to 6,326.78, 8,742.56 and 5,484.78 is: 7,579.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,326.78 : 8,742.56 = 5,484.78 : x
  2. Step 2: Convert to fraction form
    6,326.78/8,742.56 = 5,484.78/x
  3. Step 3: Cross multiply
    6,326.78x = 8,742.56 × 5,484.78
  4. Step 4: Simplify right side
    6,326.78x = 47,951,018.24
  5. Step 5: Solve for x
    x = 47,951,018.24/6,326.78
  6. Step 6: Final answer
    x = 7,579.06

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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.