Home / 3,435.43-4,742-2,091.78

Finding the Fourth Proportional to 3,435.43, 4,742 and 2,091.78

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Solution

The fourth proportional to 3,435.43, 4,742 and 2,091.78 is: 2,887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,435.43 : 4,742 = 2,091.78 : x
  2. Step 2: Convert to fraction form
    3,435.43/4,742 = 2,091.78/x
  3. Step 3: Cross multiply
    3,435.43x = 4,742 × 2,091.78
  4. Step 4: Simplify right side
    3,435.43x = 9,919,220.76
  5. Step 5: Solve for x
    x = 9,919,220.76/3,435.43
  6. Step 6: Final answer
    x = 2,887.33

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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.