Home / 1,609.14-2,221.61-1,235.40

Finding the Fourth Proportional to 1,609.14, 2,221.61 and 1,235.40

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Solution

The fourth proportional to 1,609.14, 2,221.61 and 1,235.40 is: 1,705.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.14 : 2,221.61 = 1,235.40 : x
  2. Step 2: Convert to fraction form
    1,609.14/2,221.61 = 1,235.40/x
  3. Step 3: Cross multiply
    1,609.14x = 2,221.61 × 1,235.40
  4. Step 4: Simplify right side
    1,609.14x = 2,744,576.99
  5. Step 5: Solve for x
    x = 2,744,576.99/1,609.14
  6. Step 6: Final answer
    x = 1,705.62

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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.