Home / 1,811.91-2,499.06-1,316.19

Finding the Fourth Proportional to 1,811.91, 2,499.06 and 1,316.19

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Solution

The fourth proportional to 1,811.91, 2,499.06 and 1,316.19 is: 1,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.91 : 2,499.06 = 1,316.19 : x
  2. Step 2: Convert to fraction form
    1,811.91/2,499.06 = 1,316.19/x
  3. Step 3: Cross multiply
    1,811.91x = 2,499.06 × 1,316.19
  4. Step 4: Simplify right side
    1,811.91x = 3,289,237.78
  5. Step 5: Solve for x
    x = 3,289,237.78/1,811.91
  6. Step 6: Final answer
    x = 1,815.34

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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.