Home / 1,946.96-2,688.57-1,249.55

Finding the Fourth Proportional to 1,946.96, 2,688.57 and 1,249.55

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Solution

The fourth proportional to 1,946.96, 2,688.57 and 1,249.55 is: 1,725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.96 : 2,688.57 = 1,249.55 : x
  2. Step 2: Convert to fraction form
    1,946.96/2,688.57 = 1,249.55/x
  3. Step 3: Cross multiply
    1,946.96x = 2,688.57 × 1,249.55
  4. Step 4: Simplify right side
    1,946.96x = 3,359,489.20
  5. Step 5: Solve for x
    x = 3,359,489.20/1,946.96
  6. Step 6: Final answer
    x = 1,725.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.