Home / 2,705.20-4,057.39-1,318.17

Finding the Fourth Proportional to 2,705.20, 4,057.39 and 1,318.17

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Solution

The fourth proportional to 2,705.20, 4,057.39 and 1,318.17 is: 1,977.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.20 : 4,057.39 = 1,318.17 : x
  2. Step 2: Convert to fraction form
    2,705.20/4,057.39 = 1,318.17/x
  3. Step 3: Cross multiply
    2,705.20x = 4,057.39 × 1,318.17
  4. Step 4: Simplify right side
    2,705.20x = 5,348,346.64
  5. Step 5: Solve for x
    x = 5,348,346.64/2,705.20
  6. Step 6: Final answer
    x = 1,977.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.