Home / 1,694.24-2,541.68-720.32

Finding the Fourth Proportional to 1,694.24, 2,541.68 and 720.32

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Solution

The fourth proportional to 1,694.24, 2,541.68 and 720.32 is: 1,080.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,694.24 : 2,541.68 = 720.32 : x
  2. Step 2: Convert to fraction form
    1,694.24/2,541.68 = 720.32/x
  3. Step 3: Cross multiply
    1,694.24x = 2,541.68 × 720.32
  4. Step 4: Simplify right side
    1,694.24x = 1,830,822.94
  5. Step 5: Solve for x
    x = 1,830,822.94/1,694.24
  6. Step 6: Final answer
    x = 1,080.62

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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.