Home / 7,131.10-9,839.90-4,479.38

Finding the Fourth Proportional to 7,131.10, 9,839.90 and 4,479.38

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Solution

The fourth proportional to 7,131.10, 9,839.90 and 4,479.38 is: 6,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.10 : 9,839.90 = 4,479.38 : x
  2. Step 2: Convert to fraction form
    7,131.10/9,839.90 = 4,479.38/x
  3. Step 3: Cross multiply
    7,131.10x = 9,839.90 × 4,479.38
  4. Step 4: Simplify right side
    7,131.10x = 44,076,651.26
  5. Step 5: Solve for x
    x = 44,076,651.26/7,131.10
  6. Step 6: Final answer
    x = 6,180.90

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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.