Home / 1,581.24-2,182.20-882.64

Finding the Fourth Proportional to 1,581.24, 2,182.20 and 882.64

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Solution

The fourth proportional to 1,581.24, 2,182.20 and 882.64 is: 1,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.24 : 2,182.20 = 882.64 : x
  2. Step 2: Convert to fraction form
    1,581.24/2,182.20 = 882.64/x
  3. Step 3: Cross multiply
    1,581.24x = 2,182.20 × 882.64
  4. Step 4: Simplify right side
    1,581.24x = 1,926,097.01
  5. Step 5: Solve for x
    x = 1,926,097.01/1,581.24
  6. Step 6: Final answer
    x = 1,218.09

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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.