Home / 1,811.43-2,499.80-1,065.35

Finding the Fourth Proportional to 1,811.43, 2,499.80 and 1,065.35

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Solution

The fourth proportional to 1,811.43, 2,499.80 and 1,065.35 is: 1,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.43 : 2,499.80 = 1,065.35 : x
  2. Step 2: Convert to fraction form
    1,811.43/2,499.80 = 1,065.35/x
  3. Step 3: Cross multiply
    1,811.43x = 2,499.80 × 1,065.35
  4. Step 4: Simplify right side
    1,811.43x = 2,663,162.85
  5. Step 5: Solve for x
    x = 2,663,162.85/1,811.43
  6. Step 6: Final answer
    x = 1,470.20

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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.