Home / 3,015.28-4,161.18-1,688.68

Finding the Fourth Proportional to 3,015.28, 4,161.18 and 1,688.68

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Solution

The fourth proportional to 3,015.28, 4,161.18 and 1,688.68 is: 2,330.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.28 : 4,161.18 = 1,688.68 : x
  2. Step 2: Convert to fraction form
    3,015.28/4,161.18 = 1,688.68/x
  3. Step 3: Cross multiply
    3,015.28x = 4,161.18 × 1,688.68
  4. Step 4: Simplify right side
    3,015.28x = 7,026,901.44
  5. Step 5: Solve for x
    x = 7,026,901.44/3,015.28
  6. Step 6: Final answer
    x = 2,330.43

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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.