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Finding the Fourth Proportional to 1,580.74, 2,181.48 and 882.16

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Solution

The fourth proportional to 1,580.74, 2,181.48 and 882.16 is: 1,217.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.74 : 2,181.48 = 882.16 : x
  2. Step 2: Convert to fraction form
    1,580.74/2,181.48 = 882.16/x
  3. Step 3: Cross multiply
    1,580.74x = 2,181.48 × 882.16
  4. Step 4: Simplify right side
    1,580.74x = 1,924,414.40
  5. Step 5: Solve for x
    x = 1,924,414.40/1,580.74
  6. Step 6: Final answer
    x = 1,217.41

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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.