Home / 3,877.83-5,816.48-1,280.61

Finding the Fourth Proportional to 3,877.83, 5,816.48 and 1,280.61

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Solution

The fourth proportional to 3,877.83, 5,816.48 and 1,280.61 is: 1,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.83 : 5,816.48 = 1,280.61 : x
  2. Step 2: Convert to fraction form
    3,877.83/5,816.48 = 1,280.61/x
  3. Step 3: Cross multiply
    3,877.83x = 5,816.48 × 1,280.61
  4. Step 4: Simplify right side
    3,877.83x = 7,448,636.05
  5. Step 5: Solve for x
    x = 7,448,636.05/3,877.83
  6. Step 6: Final answer
    x = 1,920.83

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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.