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Finding the Fourth Proportional to 7,889.85, 10,890.23 and 5,532.57

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Solution

The fourth proportional to 7,889.85, 10,890.23 and 5,532.57 is: 7,636.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,889.85 : 10,890.23 = 5,532.57 : x
  2. Step 2: Convert to fraction form
    7,889.85/10,890.23 = 5,532.57/x
  3. Step 3: Cross multiply
    7,889.85x = 10,890.23 × 5,532.57
  4. Step 4: Simplify right side
    7,889.85x = 60,250,932.13
  5. Step 5: Solve for x
    x = 60,250,932.13/7,889.85
  6. Step 6: Final answer
    x = 7,636.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.