Home / 7,931.45-11,898.54-2,666.97

Finding the Fourth Proportional to 7,931.45, 11,898.54 and 2,666.97

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Solution

The fourth proportional to 7,931.45, 11,898.54 and 2,666.97 is: 4,000.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.45 : 11,898.54 = 2,666.97 : x
  2. Step 2: Convert to fraction form
    7,931.45/11,898.54 = 2,666.97/x
  3. Step 3: Cross multiply
    7,931.45x = 11,898.54 × 2,666.97
  4. Step 4: Simplify right side
    7,931.45x = 31,733,049.22
  5. Step 5: Solve for x
    x = 31,733,049.22/7,931.45
  6. Step 6: Final answer
    x = 4,000.91

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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.