Home / 1,206.78-1,817.93-1,191.66

Finding the Fourth Proportional to 1,206.78, 1,817.93 and 1,191.66

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Solution

The fourth proportional to 1,206.78, 1,817.93 and 1,191.66 is: 1,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.78 : 1,817.93 = 1,191.66 : x
  2. Step 2: Convert to fraction form
    1,206.78/1,817.93 = 1,191.66/x
  3. Step 3: Cross multiply
    1,206.78x = 1,817.93 × 1,191.66
  4. Step 4: Simplify right side
    1,206.78x = 2,166,348.51
  5. Step 5: Solve for x
    x = 2,166,348.51/1,206.78
  6. Step 6: Final answer
    x = 1,795.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.