Home / 3,015.17-4,160.92-1,688.85

Finding the Fourth Proportional to 3,015.17, 4,160.92 and 1,688.85

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Solution

The fourth proportional to 3,015.17, 4,160.92 and 1,688.85 is: 2,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.17 : 4,160.92 = 1,688.85 : x
  2. Step 2: Convert to fraction form
    3,015.17/4,160.92 = 1,688.85/x
  3. Step 3: Cross multiply
    3,015.17x = 4,160.92 × 1,688.85
  4. Step 4: Simplify right side
    3,015.17x = 7,027,168.69
  5. Step 5: Solve for x
    x = 7,027,168.69/3,015.17
  6. Step 6: Final answer
    x = 2,330.60

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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.