Home / 7,128.21-10,690.46-3,376.29

Finding the Fourth Proportional to 7,128.21, 10,690.46 and 3,376.29

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Solution

The fourth proportional to 7,128.21, 10,690.46 and 3,376.29 is: 5,063.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.21 : 10,690.46 = 3,376.29 : x
  2. Step 2: Convert to fraction form
    7,128.21/10,690.46 = 3,376.29/x
  3. Step 3: Cross multiply
    7,128.21x = 10,690.46 × 3,376.29
  4. Step 4: Simplify right side
    7,128.21x = 36,094,076.31
  5. Step 5: Solve for x
    x = 36,094,076.31/7,128.21
  6. Step 6: Final answer
    x = 5,063.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.