Home / 3,878.24-5,818.48-1,281.92

Finding the Fourth Proportional to 3,878.24, 5,818.48 and 1,281.92

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Solution

The fourth proportional to 3,878.24, 5,818.48 and 1,281.92 is: 1,923.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.24 : 5,818.48 = 1,281.92 : x
  2. Step 2: Convert to fraction form
    3,878.24/5,818.48 = 1,281.92/x
  3. Step 3: Cross multiply
    3,878.24x = 5,818.48 × 1,281.92
  4. Step 4: Simplify right side
    3,878.24x = 7,458,825.88
  5. Step 5: Solve for x
    x = 7,458,825.88/3,878.24
  6. Step 6: Final answer
    x = 1,923.25

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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.