Home / 3,360.85-5,038.59-1,280.44

Finding the Fourth Proportional to 3,360.85, 5,038.59 and 1,280.44

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Solution

The fourth proportional to 3,360.85, 5,038.59 and 1,280.44 is: 1,919.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360.85 : 5,038.59 = 1,280.44 : x
  2. Step 2: Convert to fraction form
    3,360.85/5,038.59 = 1,280.44/x
  3. Step 3: Cross multiply
    3,360.85x = 5,038.59 × 1,280.44
  4. Step 4: Simplify right side
    3,360.85x = 6,451,612.18
  5. Step 5: Solve for x
    x = 6,451,612.18/3,360.85
  6. Step 6: Final answer
    x = 1,919.64

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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.