Home / 1,817.01-2,723.58-720.90

Finding the Fourth Proportional to 1,817.01, 2,723.58 and 720.90

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Solution

The fourth proportional to 1,817.01, 2,723.58 and 720.90 is: 1,080.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.01 : 2,723.58 = 720.90 : x
  2. Step 2: Convert to fraction form
    1,817.01/2,723.58 = 720.90/x
  3. Step 3: Cross multiply
    1,817.01x = 2,723.58 × 720.90
  4. Step 4: Simplify right side
    1,817.01x = 1,963,428.82
  5. Step 5: Solve for x
    x = 1,963,428.82/1,817.01
  6. Step 6: Final answer
    x = 1,080.58

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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.