Home / 1,581.12-2,181.94-882.50

Finding the Fourth Proportional to 1,581.12, 2,181.94 and 882.50

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Solution

The fourth proportional to 1,581.12, 2,181.94 and 882.50 is: 1,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.12 : 2,181.94 = 882.50 : x
  2. Step 2: Convert to fraction form
    1,581.12/2,181.94 = 882.50/x
  3. Step 3: Cross multiply
    1,581.12x = 2,181.94 × 882.50
  4. Step 4: Simplify right side
    1,581.12x = 1,925,548.93
  5. Step 5: Solve for x
    x = 1,925,548.93/1,581.12
  6. Step 6: Final answer
    x = 1,217.84

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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.