Home / 2,976.42-4,461.60-1,220.70

Finding the Fourth Proportional to 2,976.42, 4,461.60 and 1,220.70

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Solution

The fourth proportional to 2,976.42, 4,461.60 and 1,220.70 is: 1,829.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.42 : 4,461.60 = 1,220.70 : x
  2. Step 2: Convert to fraction form
    2,976.42/4,461.60 = 1,220.70/x
  3. Step 3: Cross multiply
    2,976.42x = 4,461.60 × 1,220.70
  4. Step 4: Simplify right side
    2,976.42x = 5,446,275.12
  5. Step 5: Solve for x
    x = 5,446,275.12/2,976.42
  6. Step 6: Final answer
    x = 1,829.81

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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.