Home / 3,018.12-4,165.12-1,691.81

Finding the Fourth Proportional to 3,018.12, 4,165.12 and 1,691.81

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Solution

The fourth proportional to 3,018.12, 4,165.12 and 1,691.81 is: 2,334.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.12 : 4,165.12 = 1,691.81 : x
  2. Step 2: Convert to fraction form
    3,018.12/4,165.12 = 1,691.81/x
  3. Step 3: Cross multiply
    3,018.12x = 4,165.12 × 1,691.81
  4. Step 4: Simplify right side
    3,018.12x = 7,046,591.67
  5. Step 5: Solve for x
    x = 7,046,591.67/3,018.12
  6. Step 6: Final answer
    x = 2,334.77

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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.