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Finding the Fourth Proportional to 1,861.38, 2,789.24 and 934.34

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Solution

The fourth proportional to 1,861.38, 2,789.24 and 934.34 is: 1,400.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.38 : 2,789.24 = 934.34 : x
  2. Step 2: Convert to fraction form
    1,861.38/2,789.24 = 934.34/x
  3. Step 3: Cross multiply
    1,861.38x = 2,789.24 × 934.34
  4. Step 4: Simplify right side
    1,861.38x = 2,606,079.88
  5. Step 5: Solve for x
    x = 2,606,079.88/1,861.38
  6. Step 6: Final answer
    x = 1,400.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.