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Finding the Fourth Proportional to 1,790.73, 2,686.11 and 558.09

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Solution

The fourth proportional to 1,790.73, 2,686.11 and 558.09 is: 837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.73 : 2,686.11 = 558.09 : x
  2. Step 2: Convert to fraction form
    1,790.73/2,686.11 = 558.09/x
  3. Step 3: Cross multiply
    1,790.73x = 2,686.11 × 558.09
  4. Step 4: Simplify right side
    1,790.73x = 1,499,091.13
  5. Step 5: Solve for x
    x = 1,499,091.13/1,790.73
  6. Step 6: Final answer
    x = 837.14

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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.