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Finding the Fourth Proportional to 2,195.76, 3,294.95 and 810.07

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Solution

The fourth proportional to 2,195.76, 3,294.95 and 810.07 is: 1,215.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.76 : 3,294.95 = 810.07 : x
  2. Step 2: Convert to fraction form
    2,195.76/3,294.95 = 810.07/x
  3. Step 3: Cross multiply
    2,195.76x = 3,294.95 × 810.07
  4. Step 4: Simplify right side
    2,195.76x = 2,669,146.39
  5. Step 5: Solve for x
    x = 2,669,146.39/2,195.76
  6. Step 6: Final answer
    x = 1,215.59

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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.