Home / 2,087.02-3,135.51-1,221.94

Finding the Fourth Proportional to 2,087.02, 3,135.51 and 1,221.94

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Solution

The fourth proportional to 2,087.02, 3,135.51 and 1,221.94 is: 1,835.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.02 : 3,135.51 = 1,221.94 : x
  2. Step 2: Convert to fraction form
    2,087.02/3,135.51 = 1,221.94/x
  3. Step 3: Cross multiply
    2,087.02x = 3,135.51 × 1,221.94
  4. Step 4: Simplify right side
    2,087.02x = 3,831,405.09
  5. Step 5: Solve for x
    x = 3,831,405.09/2,087.02
  6. Step 6: Final answer
    x = 1,835.83

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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.