Home / 2,120.92-3,175.08-1,461.40

Finding the Fourth Proportional to 2,120.92, 3,175.08 and 1,461.40

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Solution

The fourth proportional to 2,120.92, 3,175.08 and 1,461.40 is: 2,187.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.92 : 3,175.08 = 1,461.40 : x
  2. Step 2: Convert to fraction form
    2,120.92/3,175.08 = 1,461.40/x
  3. Step 3: Cross multiply
    2,120.92x = 3,175.08 × 1,461.40
  4. Step 4: Simplify right side
    2,120.92x = 4,640,061.91
  5. Step 5: Solve for x
    x = 4,640,061.91/2,120.92
  6. Step 6: Final answer
    x = 2,187.76

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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.