Home / 1,343.67-2,005.07-1,205.78

Finding the Fourth Proportional to 1,343.67, 2,005.07 and 1,205.78

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Solution

The fourth proportional to 1,343.67, 2,005.07 and 1,205.78 is: 1,799.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.67 : 2,005.07 = 1,205.78 : x
  2. Step 2: Convert to fraction form
    1,343.67/2,005.07 = 1,205.78/x
  3. Step 3: Cross multiply
    1,343.67x = 2,005.07 × 1,205.78
  4. Step 4: Simplify right side
    1,343.67x = 2,417,657.25
  5. Step 5: Solve for x
    x = 2,417,657.25/1,343.67
  6. Step 6: Final answer
    x = 1,799.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.