Home / 1,657.70-2,286.68-1,208.98

Finding the Fourth Proportional to 1,657.70, 2,286.68 and 1,208.98

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Solution

The fourth proportional to 1,657.70, 2,286.68 and 1,208.98 is: 1,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.70 : 2,286.68 = 1,208.98 : x
  2. Step 2: Convert to fraction form
    1,657.70/2,286.68 = 1,208.98/x
  3. Step 3: Cross multiply
    1,657.70x = 2,286.68 × 1,208.98
  4. Step 4: Simplify right side
    1,657.70x = 2,764,541.14
  5. Step 5: Solve for x
    x = 2,764,541.14/1,657.70
  6. Step 6: Final answer
    x = 1,667.70

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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.