Home / 1,981.66-2,734.58-1,142.50

Finding the Fourth Proportional to 1,981.66, 2,734.58 and 1,142.50

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Solution

The fourth proportional to 1,981.66, 2,734.58 and 1,142.50 is: 1,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.66 : 2,734.58 = 1,142.50 : x
  2. Step 2: Convert to fraction form
    1,981.66/2,734.58 = 1,142.50/x
  3. Step 3: Cross multiply
    1,981.66x = 2,734.58 × 1,142.50
  4. Step 4: Simplify right side
    1,981.66x = 3,124,257.65
  5. Step 5: Solve for x
    x = 3,124,257.65/1,981.66
  6. Step 6: Final answer
    x = 1,576.59

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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.