Home / 1,853.16-2,781.69-1,811.32

Finding the Fourth Proportional to 1,853.16, 2,781.69 and 1,811.32

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Solution

The fourth proportional to 1,853.16, 2,781.69 and 1,811.32 is: 2,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.16 : 2,781.69 = 1,811.32 : x
  2. Step 2: Convert to fraction form
    1,853.16/2,781.69 = 1,811.32/x
  3. Step 3: Cross multiply
    1,853.16x = 2,781.69 × 1,811.32
  4. Step 4: Simplify right side
    1,853.16x = 5,038,530.73
  5. Step 5: Solve for x
    x = 5,038,530.73/1,853.16
  6. Step 6: Final answer
    x = 2,718.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.