Home / 3,461.39-5,190.93-1,120.77

Finding the Fourth Proportional to 3,461.39, 5,190.93 and 1,120.77

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Solution

The fourth proportional to 3,461.39, 5,190.93 and 1,120.77 is: 1,680.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.39 : 5,190.93 = 1,120.77 : x
  2. Step 2: Convert to fraction form
    3,461.39/5,190.93 = 1,120.77/x
  3. Step 3: Cross multiply
    3,461.39x = 5,190.93 × 1,120.77
  4. Step 4: Simplify right side
    3,461.39x = 5,817,838.62
  5. Step 5: Solve for x
    x = 5,817,838.62/3,461.39
  6. Step 6: Final answer
    x = 1,680.78

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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.