Home / 1,661.43-2,488.10-1,172.19

Finding the Fourth Proportional to 1,661.43, 2,488.10 and 1,172.19

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Solution

The fourth proportional to 1,661.43, 2,488.10 and 1,172.19 is: 1,755.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.43 : 2,488.10 = 1,172.19 : x
  2. Step 2: Convert to fraction form
    1,661.43/2,488.10 = 1,172.19/x
  3. Step 3: Cross multiply
    1,661.43x = 2,488.10 × 1,172.19
  4. Step 4: Simplify right side
    1,661.43x = 2,916,520.08
  5. Step 5: Solve for x
    x = 2,916,520.08/1,661.43
  6. Step 6: Final answer
    x = 1,755.43

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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.