Home / 1,954.80-2,915.73-1,818.72

Finding the Fourth Proportional to 1,954.80, 2,915.73 and 1,818.72

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Solution

The fourth proportional to 1,954.80, 2,915.73 and 1,818.72 is: 2,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.80 : 2,915.73 = 1,818.72 : x
  2. Step 2: Convert to fraction form
    1,954.80/2,915.73 = 1,818.72/x
  3. Step 3: Cross multiply
    1,954.80x = 2,915.73 × 1,818.72
  4. Step 4: Simplify right side
    1,954.80x = 5,302,896.47
  5. Step 5: Solve for x
    x = 5,302,896.47/1,954.80
  6. Step 6: Final answer
    x = 2,712.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.