Home / 1,931.84-2,659.82-1,511.66

Finding the Fourth Proportional to 1,931.84, 2,659.82 and 1,511.66

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Solution

The fourth proportional to 1,931.84, 2,659.82 and 1,511.66 is: 2,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.84 : 2,659.82 = 1,511.66 : x
  2. Step 2: Convert to fraction form
    1,931.84/2,659.82 = 1,511.66/x
  3. Step 3: Cross multiply
    1,931.84x = 2,659.82 × 1,511.66
  4. Step 4: Simplify right side
    1,931.84x = 4,020,735.94
  5. Step 5: Solve for x
    x = 4,020,735.94/1,931.84
  6. Step 6: Final answer
    x = 2,081.30

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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.