Home / 1,811.54-2,498.50-1,147.75

Finding the Fourth Proportional to 1,811.54, 2,498.50 and 1,147.75

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Solution

The fourth proportional to 1,811.54, 2,498.50 and 1,147.75 is: 1,582.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.54 : 2,498.50 = 1,147.75 : x
  2. Step 2: Convert to fraction form
    1,811.54/2,498.50 = 1,147.75/x
  3. Step 3: Cross multiply
    1,811.54x = 2,498.50 × 1,147.75
  4. Step 4: Simplify right side
    1,811.54x = 2,867,653.38
  5. Step 5: Solve for x
    x = 2,867,653.38/1,811.54
  6. Step 6: Final answer
    x = 1,582.99

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1.5x scale

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.