Home / 1,581.43-2,180.75-1,050.12

Finding the Fourth Proportional to 1,581.43, 2,180.75 and 1,050.12

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Solution

The fourth proportional to 1,581.43, 2,180.75 and 1,050.12 is: 1,448.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.43 : 2,180.75 = 1,050.12 : x
  2. Step 2: Convert to fraction form
    1,581.43/2,180.75 = 1,050.12/x
  3. Step 3: Cross multiply
    1,581.43x = 2,180.75 × 1,050.12
  4. Step 4: Simplify right side
    1,581.43x = 2,290,049.19
  5. Step 5: Solve for x
    x = 2,290,049.19/1,581.43
  6. Step 6: Final answer
    x = 1,448.09

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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.