Home / 3,161.28-4,769.76-3,135.36

Finding the Fourth Proportional to 3,161.28, 4,769.76 and 3,135.36

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Solution

The fourth proportional to 3,161.28, 4,769.76 and 3,135.36 is: 4,730.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.28 : 4,769.76 = 3,135.36 : x
  2. Step 2: Convert to fraction form
    3,161.28/4,769.76 = 3,135.36/x
  3. Step 3: Cross multiply
    3,161.28x = 4,769.76 × 3,135.36
  4. Step 4: Simplify right side
    3,161.28x = 14,954,914.71
  5. Step 5: Solve for x
    x = 14,954,914.71/3,161.28
  6. Step 6: Final answer
    x = 4,730.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.