Home / 2,780.02-3,836.45-1,521.11

Finding the Fourth Proportional to 2,780.02, 3,836.45 and 1,521.11

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Solution

The fourth proportional to 2,780.02, 3,836.45 and 1,521.11 is: 2,099.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.02 : 3,836.45 = 1,521.11 : x
  2. Step 2: Convert to fraction form
    2,780.02/3,836.45 = 1,521.11/x
  3. Step 3: Cross multiply
    2,780.02x = 3,836.45 × 1,521.11
  4. Step 4: Simplify right side
    2,780.02x = 5,835,662.46
  5. Step 5: Solve for x
    x = 5,835,662.46/2,780.02
  6. Step 6: Final answer
    x = 2,099.14

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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.