Home / 5,379.12-7,423.56-2,989.44

Finding the Fourth Proportional to 5,379.12, 7,423.56 and 2,989.44

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Solution

The fourth proportional to 5,379.12, 7,423.56 and 2,989.44 is: 4,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.12 : 7,423.56 = 2,989.44 : x
  2. Step 2: Convert to fraction form
    5,379.12/7,423.56 = 2,989.44/x
  3. Step 3: Cross multiply
    5,379.12x = 7,423.56 × 2,989.44
  4. Step 4: Simplify right side
    5,379.12x = 22,192,287.21
  5. Step 5: Solve for x
    x = 22,192,287.21/5,379.12
  6. Step 6: Final answer
    x = 4,125.64

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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.