Home / 1,811.30-2,498.54-1,065.10

Finding the Fourth Proportional to 1,811.30, 2,498.54 and 1,065.10

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Solution

The fourth proportional to 1,811.30, 2,498.54 and 1,065.10 is: 1,469.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.30 : 2,498.54 = 1,065.10 : x
  2. Step 2: Convert to fraction form
    1,811.30/2,498.54 = 1,065.10/x
  3. Step 3: Cross multiply
    1,811.30x = 2,498.54 × 1,065.10
  4. Step 4: Simplify right side
    1,811.30x = 2,661,194.95
  5. Step 5: Solve for x
    x = 2,661,194.95/1,811.30
  6. Step 6: Final answer
    x = 1,469.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.