Home / 2,113.40-3,170.10-553.30

Finding the Fourth Proportional to 2,113.40, 3,170.10 and 553.30

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Solution

The fourth proportional to 2,113.40, 3,170.10 and 553.30 is: 829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.40 : 3,170.10 = 553.30 : x
  2. Step 2: Convert to fraction form
    2,113.40/3,170.10 = 553.30/x
  3. Step 3: Cross multiply
    2,113.40x = 3,170.10 × 553.30
  4. Step 4: Simplify right side
    2,113.40x = 1,754,016.33
  5. Step 5: Solve for x
    x = 1,754,016.33/2,113.40
  6. Step 6: Final answer
    x = 829.95

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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.