Home / 2,148.13-3,222.15-814.18

Finding the Fourth Proportional to 2,148.13, 3,222.15 and 814.18

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Solution

The fourth proportional to 2,148.13, 3,222.15 and 814.18 is: 1,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.13 : 3,222.15 = 814.18 : x
  2. Step 2: Convert to fraction form
    2,148.13/3,222.15 = 814.18/x
  3. Step 3: Cross multiply
    2,148.13x = 3,222.15 × 814.18
  4. Step 4: Simplify right side
    2,148.13x = 2,623,393.98
  5. Step 5: Solve for x
    x = 2,623,393.98/2,148.13
  6. Step 6: Final answer
    x = 1,221.25

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1.5x scale

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.