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Finding the Fourth Proportional to 6,472.78, 8,958.10 and 6,317.50

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Solution

The fourth proportional to 6,472.78, 8,958.10 and 6,317.50 is: 8,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.78 : 8,958.10 = 6,317.50 : x
  2. Step 2: Convert to fraction form
    6,472.78/8,958.10 = 6,317.50/x
  3. Step 3: Cross multiply
    6,472.78x = 8,958.10 × 6,317.50
  4. Step 4: Simplify right side
    6,472.78x = 56,592,796.75
  5. Step 5: Solve for x
    x = 56,592,796.75/6,472.78
  6. Step 6: Final answer
    x = 8,743.20

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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.