Home / 3,418.10-4,717.05-1,905.75

Finding the Fourth Proportional to 3,418.10, 4,717.05 and 1,905.75

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Solution

The fourth proportional to 3,418.10, 4,717.05 and 1,905.75 is: 2,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.10 : 4,717.05 = 1,905.75 : x
  2. Step 2: Convert to fraction form
    3,418.10/4,717.05 = 1,905.75/x
  3. Step 3: Cross multiply
    3,418.10x = 4,717.05 × 1,905.75
  4. Step 4: Simplify right side
    3,418.10x = 8,989,518.04
  5. Step 5: Solve for x
    x = 8,989,518.04/3,418.10
  6. Step 6: Final answer
    x = 2,629.98

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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.