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Finding the Fourth Proportional to 3,659.58, 5,489.98 and 1,810.76

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Solution

The fourth proportional to 3,659.58, 5,489.98 and 1,810.76 is: 2,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.58 : 5,489.98 = 1,810.76 : x
  2. Step 2: Convert to fraction form
    3,659.58/5,489.98 = 1,810.76/x
  3. Step 3: Cross multiply
    3,659.58x = 5,489.98 × 1,810.76
  4. Step 4: Simplify right side
    3,659.58x = 9,941,004.21
  5. Step 5: Solve for x
    x = 9,941,004.21/3,659.58
  6. Step 6: Final answer
    x = 2,716.43

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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.