Home / 1,322.59-1,823.49-1,085.68

Finding the Fourth Proportional to 1,322.59, 1,823.49 and 1,085.68

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Solution

The fourth proportional to 1,322.59, 1,823.49 and 1,085.68 is: 1,496.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.59 : 1,823.49 = 1,085.68 : x
  2. Step 2: Convert to fraction form
    1,322.59/1,823.49 = 1,085.68/x
  3. Step 3: Cross multiply
    1,322.59x = 1,823.49 × 1,085.68
  4. Step 4: Simplify right side
    1,322.59x = 1,979,726.62
  5. Step 5: Solve for x
    x = 1,979,726.62/1,322.59
  6. Step 6: Final answer
    x = 1,496.86

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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.