Home / 1,620.02-2,428.68-695.54

Finding the Fourth Proportional to 1,620.02, 2,428.68 and 695.54

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Solution

The fourth proportional to 1,620.02, 2,428.68 and 695.54 is: 1,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.02 : 2,428.68 = 695.54 : x
  2. Step 2: Convert to fraction form
    1,620.02/2,428.68 = 695.54/x
  3. Step 3: Cross multiply
    1,620.02x = 2,428.68 × 695.54
  4. Step 4: Simplify right side
    1,620.02x = 1,689,244.09
  5. Step 5: Solve for x
    x = 1,689,244.09/1,620.02
  6. Step 6: Final answer
    x = 1,042.73

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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.