Home / 2,108.64-3,160.80-1,013.20

Finding the Fourth Proportional to 2,108.64, 3,160.80 and 1,013.20

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Solution

The fourth proportional to 2,108.64, 3,160.80 and 1,013.20 is: 1,518.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.64 : 3,160.80 = 1,013.20 : x
  2. Step 2: Convert to fraction form
    2,108.64/3,160.80 = 1,013.20/x
  3. Step 3: Cross multiply
    2,108.64x = 3,160.80 × 1,013.20
  4. Step 4: Simplify right side
    2,108.64x = 3,202,522.56
  5. Step 5: Solve for x
    x = 3,202,522.56/2,108.64
  6. Step 6: Final answer
    x = 1,518.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.