Home / 3,428.09-4,730.50-1,935.80

Finding the Fourth Proportional to 3,428.09, 4,730.50 and 1,935.80

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Solution

The fourth proportional to 3,428.09, 4,730.50 and 1,935.80 is: 2,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.09 : 4,730.50 = 1,935.80 : x
  2. Step 2: Convert to fraction form
    3,428.09/4,730.50 = 1,935.80/x
  3. Step 3: Cross multiply
    3,428.09x = 4,730.50 × 1,935.80
  4. Step 4: Simplify right side
    3,428.09x = 9,157,301.90
  5. Step 5: Solve for x
    x = 9,157,301.90/3,428.09
  6. Step 6: Final answer
    x = 2,671.25

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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.