Home / 8,072.26-11,140.18-5,378.81

Finding the Fourth Proportional to 8,072.26, 11,140.18 and 5,378.81

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Solution

The fourth proportional to 8,072.26, 11,140.18 and 5,378.81 is: 7,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.26 : 11,140.18 = 5,378.81 : x
  2. Step 2: Convert to fraction form
    8,072.26/11,140.18 = 5,378.81/x
  3. Step 3: Cross multiply
    8,072.26x = 11,140.18 × 5,378.81
  4. Step 4: Simplify right side
    8,072.26x = 59,920,842.44
  5. Step 5: Solve for x
    x = 59,920,842.44/8,072.26
  6. Step 6: Final answer
    x = 7,423.06

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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.