Home / 1,581.93-2,182.68-1,286.69

Finding the Fourth Proportional to 1,581.93, 2,182.68 and 1,286.69

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Solution

The fourth proportional to 1,581.93, 2,182.68 and 1,286.69 is: 1,775.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.93 : 2,182.68 = 1,286.69 : x
  2. Step 2: Convert to fraction form
    1,581.93/2,182.68 = 1,286.69/x
  3. Step 3: Cross multiply
    1,581.93x = 2,182.68 × 1,286.69
  4. Step 4: Simplify right side
    1,581.93x = 2,808,421.62
  5. Step 5: Solve for x
    x = 2,808,421.62/1,581.93
  6. Step 6: Final answer
    x = 1,775.31

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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.