Home / 3,405.50-5,108.57-1,325.66

Finding the Fourth Proportional to 3,405.50, 5,108.57 and 1,325.66

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Solution

The fourth proportional to 3,405.50, 5,108.57 and 1,325.66 is: 1,988.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.50 : 5,108.57 = 1,325.66 : x
  2. Step 2: Convert to fraction form
    3,405.50/5,108.57 = 1,325.66/x
  3. Step 3: Cross multiply
    3,405.50x = 5,108.57 × 1,325.66
  4. Step 4: Simplify right side
    3,405.50x = 6,772,226.91
  5. Step 5: Solve for x
    x = 6,772,226.91/3,405.50
  6. Step 6: Final answer
    x = 1,988.61

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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.