Home / 2,856.25-3,942.26-1,677.70

Finding the Fourth Proportional to 2,856.25, 3,942.26 and 1,677.70

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Solution

The fourth proportional to 2,856.25, 3,942.26 and 1,677.70 is: 2,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.25 : 3,942.26 = 1,677.70 : x
  2. Step 2: Convert to fraction form
    2,856.25/3,942.26 = 1,677.70/x
  3. Step 3: Cross multiply
    2,856.25x = 3,942.26 × 1,677.70
  4. Step 4: Simplify right side
    2,856.25x = 6,613,929.60
  5. Step 5: Solve for x
    x = 6,613,929.60/2,856.25
  6. Step 6: Final answer
    x = 2,315.60

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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.