Home / 3,878.24-5,814.48-1,280.48

Finding the Fourth Proportional to 3,878.24, 5,814.48 and 1,280.48

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Solution

The fourth proportional to 3,878.24, 5,814.48 and 1,280.48 is: 1,919.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.24 : 5,814.48 = 1,280.48 : x
  2. Step 2: Convert to fraction form
    3,878.24/5,814.48 = 1,280.48/x
  3. Step 3: Cross multiply
    3,878.24x = 5,814.48 × 1,280.48
  4. Step 4: Simplify right side
    3,878.24x = 7,445,325.35
  5. Step 5: Solve for x
    x = 7,445,325.35/3,878.24
  6. Step 6: Final answer
    x = 1,919.77

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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.