Home / 3,397.06-4,687.85-1,905.07

Finding the Fourth Proportional to 3,397.06, 4,687.85 and 1,905.07

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Solution

The fourth proportional to 3,397.06, 4,687.85 and 1,905.07 is: 2,628.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,397.06 : 4,687.85 = 1,905.07 : x
  2. Step 2: Convert to fraction form
    3,397.06/4,687.85 = 1,905.07/x
  3. Step 3: Cross multiply
    3,397.06x = 4,687.85 × 1,905.07
  4. Step 4: Simplify right side
    3,397.06x = 8,930,649.43
  5. Step 5: Solve for x
    x = 8,930,649.43/3,397.06
  6. Step 6: Final answer
    x = 2,628.94

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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.