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Finding the Fourth Proportional to 5,423.70, 7,455.74 and 4,889.10

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Solution

The fourth proportional to 5,423.70, 7,455.74 and 4,889.10 is: 6,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.70 : 7,455.74 = 4,889.10 : x
  2. Step 2: Convert to fraction form
    5,423.70/7,455.74 = 4,889.10/x
  3. Step 3: Cross multiply
    5,423.70x = 7,455.74 × 4,889.10
  4. Step 4: Simplify right side
    5,423.70x = 36,451,833.99
  5. Step 5: Solve for x
    x = 36,451,833.99/5,423.70
  6. Step 6: Final answer
    x = 6,720.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.