Home / 1,661.20-2,291.73-997.66

Finding the Fourth Proportional to 1,661.20, 2,291.73 and 997.66

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Solution

The fourth proportional to 1,661.20, 2,291.73 and 997.66 is: 1,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.20 : 2,291.73 = 997.66 : x
  2. Step 2: Convert to fraction form
    1,661.20/2,291.73 = 997.66/x
  3. Step 3: Cross multiply
    1,661.20x = 2,291.73 × 997.66
  4. Step 4: Simplify right side
    1,661.20x = 2,286,372.92
  5. Step 5: Solve for x
    x = 2,286,372.92/1,661.20
  6. Step 6: Final answer
    x = 1,376.34

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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.