Home / 7,931.10-11,899.26-2,666.64

Finding the Fourth Proportional to 7,931.10, 11,899.26 and 2,666.64

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Solution

The fourth proportional to 7,931.10, 11,899.26 and 2,666.64 is: 4,000.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.10 : 11,899.26 = 2,666.64 : x
  2. Step 2: Convert to fraction form
    7,931.10/11,899.26 = 2,666.64/x
  3. Step 3: Cross multiply
    7,931.10x = 11,899.26 × 2,666.64
  4. Step 4: Simplify right side
    7,931.10x = 31,731,042.69
  5. Step 5: Solve for x
    x = 31,731,042.69/7,931.10
  6. Step 6: Final answer
    x = 4,000.84

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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.