Home / 2,780.19-3,836.50-1,521.01

Finding the Fourth Proportional to 2,780.19, 3,836.50 and 1,521.01

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Solution

The fourth proportional to 2,780.19, 3,836.50 and 1,521.01 is: 2,098.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.19 : 3,836.50 = 1,521.01 : x
  2. Step 2: Convert to fraction form
    2,780.19/3,836.50 = 1,521.01/x
  3. Step 3: Cross multiply
    2,780.19x = 3,836.50 × 1,521.01
  4. Step 4: Simplify right side
    2,780.19x = 5,835,354.87
  5. Step 5: Solve for x
    x = 5,835,354.87/2,780.19
  6. Step 6: Final answer
    x = 2,098.91

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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.