Home / 7,931.90-11,889.24-5,160.54

Finding the Fourth Proportional to 7,931.90, 11,889.24 and 5,160.54

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Solution

The fourth proportional to 7,931.90, 11,889.24 and 5,160.54 is: 7,735.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.90 : 11,889.24 = 5,160.54 : x
  2. Step 2: Convert to fraction form
    7,931.90/11,889.24 = 5,160.54/x
  3. Step 3: Cross multiply
    7,931.90x = 11,889.24 × 5,160.54
  4. Step 4: Simplify right side
    7,931.90x = 61,354,898.59
  5. Step 5: Solve for x
    x = 61,354,898.59/7,931.90
  6. Step 6: Final answer
    x = 7,735.21

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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.