Home / 1,931.76-2,665.44-1,185.84

Finding the Fourth Proportional to 1,931.76, 2,665.44 and 1,185.84

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Solution

The fourth proportional to 1,931.76, 2,665.44 and 1,185.84 is: 1,636.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.76 : 2,665.44 = 1,185.84 : x
  2. Step 2: Convert to fraction form
    1,931.76/2,665.44 = 1,185.84/x
  3. Step 3: Cross multiply
    1,931.76x = 2,665.44 × 1,185.84
  4. Step 4: Simplify right side
    1,931.76x = 3,160,785.37
  5. Step 5: Solve for x
    x = 3,160,785.37/1,931.76
  6. Step 6: Final answer
    x = 1,636.22

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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.