Home / 1,311.08-1,809.30-1,016.74

Finding the Fourth Proportional to 1,311.08, 1,809.30 and 1,016.74

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Solution

The fourth proportional to 1,311.08, 1,809.30 and 1,016.74 is: 1,403.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.08 : 1,809.30 = 1,016.74 : x
  2. Step 2: Convert to fraction form
    1,311.08/1,809.30 = 1,016.74/x
  3. Step 3: Cross multiply
    1,311.08x = 1,809.30 × 1,016.74
  4. Step 4: Simplify right side
    1,311.08x = 1,839,587.68
  5. Step 5: Solve for x
    x = 1,839,587.68/1,311.08
  6. Step 6: Final answer
    x = 1,403.11

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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.