Home / 2,121.18-3,181.76-1,026.46

Finding the Fourth Proportional to 2,121.18, 3,181.76 and 1,026.46

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Solution

The fourth proportional to 2,121.18, 3,181.76 and 1,026.46 is: 1,539.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.18 : 3,181.76 = 1,026.46 : x
  2. Step 2: Convert to fraction form
    2,121.18/3,181.76 = 1,026.46/x
  3. Step 3: Cross multiply
    2,121.18x = 3,181.76 × 1,026.46
  4. Step 4: Simplify right side
    2,121.18x = 3,265,949.37
  5. Step 5: Solve for x
    x = 3,265,949.37/2,121.18
  6. Step 6: Final answer
    x = 1,539.69

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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.