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Finding the Fourth Proportional to 6,431.68, 9,647.70 and 1,814.68

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Solution

The fourth proportional to 6,431.68, 9,647.70 and 1,814.68 is: 2,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.68 : 9,647.70 = 1,814.68 : x
  2. Step 2: Convert to fraction form
    6,431.68/9,647.70 = 1,814.68/x
  3. Step 3: Cross multiply
    6,431.68x = 9,647.70 × 1,814.68
  4. Step 4: Simplify right side
    6,431.68x = 17,507,488.24
  5. Step 5: Solve for x
    x = 17,507,488.24/6,431.68
  6. Step 6: Final answer
    x = 2,722.07

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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.