Home / 2,081.90-3,123.44-696.14

Finding the Fourth Proportional to 2,081.90, 3,123.44 and 696.14

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Solution

The fourth proportional to 2,081.90, 3,123.44 and 696.14 is: 1,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.90 : 3,123.44 = 696.14 : x
  2. Step 2: Convert to fraction form
    2,081.90/3,123.44 = 696.14/x
  3. Step 3: Cross multiply
    2,081.90x = 3,123.44 × 696.14
  4. Step 4: Simplify right side
    2,081.90x = 2,174,332.42
  5. Step 5: Solve for x
    x = 2,174,332.42/2,081.90
  6. Step 6: Final answer
    x = 1,044.40

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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.