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Finding the Fourth Proportional to 5,289.88, 7,929.50 and 2,950.90

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Solution

The fourth proportional to 5,289.88, 7,929.50 and 2,950.90 is: 4,423.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.88 : 7,929.50 = 2,950.90 : x
  2. Step 2: Convert to fraction form
    5,289.88/7,929.50 = 2,950.90/x
  3. Step 3: Cross multiply
    5,289.88x = 7,929.50 × 2,950.90
  4. Step 4: Simplify right side
    5,289.88x = 23,399,161.55
  5. Step 5: Solve for x
    x = 23,399,161.55/5,289.88
  6. Step 6: Final answer
    x = 4,423.38

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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.