Home / 1,861.56-2,789.70-1,370.76

Finding the Fourth Proportional to 1,861.56, 2,789.70 and 1,370.76

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Solution

The fourth proportional to 1,861.56, 2,789.70 and 1,370.76 is: 2,054.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.56 : 2,789.70 = 1,370.76 : x
  2. Step 2: Convert to fraction form
    1,861.56/2,789.70 = 1,370.76/x
  3. Step 3: Cross multiply
    1,861.56x = 2,789.70 × 1,370.76
  4. Step 4: Simplify right side
    1,861.56x = 3,824,009.17
  5. Step 5: Solve for x
    x = 3,824,009.17/1,861.56
  6. Step 6: Final answer
    x = 2,054.20

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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.