Home / 3,116.56-4,299.76-1,789.36

Finding the Fourth Proportional to 3,116.56, 4,299.76 and 1,789.36

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Solution

The fourth proportional to 3,116.56, 4,299.76 and 1,789.36 is: 2,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.56 : 4,299.76 = 1,789.36 : x
  2. Step 2: Convert to fraction form
    3,116.56/4,299.76 = 1,789.36/x
  3. Step 3: Cross multiply
    3,116.56x = 4,299.76 × 1,789.36
  4. Step 4: Simplify right side
    3,116.56x = 7,693,818.55
  5. Step 5: Solve for x
    x = 7,693,818.55/3,116.56
  6. Step 6: Final answer
    x = 2,468.69

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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.