Home / 3,360.91-5,041.35-1,280.43

Finding the Fourth Proportional to 3,360.91, 5,041.35 and 1,280.43

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Solution

The fourth proportional to 3,360.91, 5,041.35 and 1,280.43 is: 1,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360.91 : 5,041.35 = 1,280.43 : x
  2. Step 2: Convert to fraction form
    3,360.91/5,041.35 = 1,280.43/x
  3. Step 3: Cross multiply
    3,360.91x = 5,041.35 × 1,280.43
  4. Step 4: Simplify right side
    3,360.91x = 6,455,095.78
  5. Step 5: Solve for x
    x = 6,455,095.78/3,360.91
  6. Step 6: Final answer
    x = 1,920.64

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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.