Home / 7,218.72-10,814.26-4,288.12

Finding the Fourth Proportional to 7,218.72, 10,814.26 and 4,288.12

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Solution

The fourth proportional to 7,218.72, 10,814.26 and 4,288.12 is: 6,423.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.72 : 10,814.26 = 4,288.12 : x
  2. Step 2: Convert to fraction form
    7,218.72/10,814.26 = 4,288.12/x
  3. Step 3: Cross multiply
    7,218.72x = 10,814.26 × 4,288.12
  4. Step 4: Simplify right side
    7,218.72x = 46,372,844.59
  5. Step 5: Solve for x
    x = 46,372,844.59/7,218.72
  6. Step 6: Final answer
    x = 6,423.97

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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.