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Finding the Fourth Proportional to 6,249.80, 8,631.18 and 5,406.45

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Solution

The fourth proportional to 6,249.80, 8,631.18 and 5,406.45 is: 7,466.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,249.80 : 8,631.18 = 5,406.45 : x
  2. Step 2: Convert to fraction form
    6,249.80/8,631.18 = 5,406.45/x
  3. Step 3: Cross multiply
    6,249.80x = 8,631.18 × 5,406.45
  4. Step 4: Simplify right side
    6,249.80x = 46,664,043.11
  5. Step 5: Solve for x
    x = 46,664,043.11/6,249.80
  6. Step 6: Final answer
    x = 7,466.49

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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.