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Finding the Fourth Proportional to 6,423.99, 9,631.30 and 4,338.82

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Solution

The fourth proportional to 6,423.99, 9,631.30 and 4,338.82 is: 6,505.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.99 : 9,631.30 = 4,338.82 : x
  2. Step 2: Convert to fraction form
    6,423.99/9,631.30 = 4,338.82/x
  3. Step 3: Cross multiply
    6,423.99x = 9,631.30 × 4,338.82
  4. Step 4: Simplify right side
    6,423.99x = 41,788,477.07
  5. Step 5: Solve for x
    x = 41,788,477.07/6,423.99
  6. Step 6: Final answer
    x = 6,505.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.