Home / 4,091.40-5,637.78-3,385.80

Finding the Fourth Proportional to 4,091.40, 5,637.78 and 3,385.80

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Solution

The fourth proportional to 4,091.40, 5,637.78 and 3,385.80 is: 4,665.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.40 : 5,637.78 = 3,385.80 : x
  2. Step 2: Convert to fraction form
    4,091.40/5,637.78 = 3,385.80/x
  3. Step 3: Cross multiply
    4,091.40x = 5,637.78 × 3,385.80
  4. Step 4: Simplify right side
    4,091.40x = 19,088,395.52
  5. Step 5: Solve for x
    x = 19,088,395.52/4,091.40
  6. Step 6: Final answer
    x = 4,665.49

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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.