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Finding the Fourth Proportional to 1,861.60, 2,805.48 and 1,676.74

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Solution

The fourth proportional to 1,861.60, 2,805.48 and 1,676.74 is: 2,526.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.60 : 2,805.48 = 1,676.74 : x
  2. Step 2: Convert to fraction form
    1,861.60/2,805.48 = 1,676.74/x
  3. Step 3: Cross multiply
    1,861.60x = 2,805.48 × 1,676.74
  4. Step 4: Simplify right side
    1,861.60x = 4,704,044.20
  5. Step 5: Solve for x
    x = 4,704,044.20/1,861.60
  6. Step 6: Final answer
    x = 2,526.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.