Home / 2,137.58-3,181.45-2,117.06

Finding the Fourth Proportional to 2,137.58, 3,181.45 and 2,117.06

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Solution

The fourth proportional to 2,137.58, 3,181.45 and 2,117.06 is: 3,150.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.58 : 3,181.45 = 2,117.06 : x
  2. Step 2: Convert to fraction form
    2,137.58/3,181.45 = 2,117.06/x
  3. Step 3: Cross multiply
    2,137.58x = 3,181.45 × 2,117.06
  4. Step 4: Simplify right side
    2,137.58x = 6,735,320.54
  5. Step 5: Solve for x
    x = 6,735,320.54/2,137.58
  6. Step 6: Final answer
    x = 3,150.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.