Home / 4,231.28-6,343.56-1,920.08

Finding the Fourth Proportional to 4,231.28, 6,343.56 and 1,920.08

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Solution

The fourth proportional to 4,231.28, 6,343.56 and 1,920.08 is: 2,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,231.28 : 6,343.56 = 1,920.08 : x
  2. Step 2: Convert to fraction form
    4,231.28/6,343.56 = 1,920.08/x
  3. Step 3: Cross multiply
    4,231.28x = 6,343.56 × 1,920.08
  4. Step 4: Simplify right side
    4,231.28x = 12,180,142.68
  5. Step 5: Solve for x
    x = 12,180,142.68/4,231.28
  6. Step 6: Final answer
    x = 2,878.60

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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.