Home / 7,416.43-11,113.71-4,128.64

Finding the Fourth Proportional to 7,416.43, 11,113.71 and 4,128.64

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Solution

The fourth proportional to 7,416.43, 11,113.71 and 4,128.64 is: 6,186.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,416.43 : 11,113.71 = 4,128.64 : x
  2. Step 2: Convert to fraction form
    7,416.43/11,113.71 = 4,128.64/x
  3. Step 3: Cross multiply
    7,416.43x = 11,113.71 × 4,128.64
  4. Step 4: Simplify right side
    7,416.43x = 45,884,507.65
  5. Step 5: Solve for x
    x = 45,884,507.65/7,416.43
  6. Step 6: Final answer
    x = 6,186.87

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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.