Home / 1,292.68-1,770.95-1,243.36

Finding the Fourth Proportional to 1,292.68, 1,770.95 and 1,243.36

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Solution

The fourth proportional to 1,292.68, 1,770.95 and 1,243.36 is: 1,703.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.68 : 1,770.95 = 1,243.36 : x
  2. Step 2: Convert to fraction form
    1,292.68/1,770.95 = 1,243.36/x
  3. Step 3: Cross multiply
    1,292.68x = 1,770.95 × 1,243.36
  4. Step 4: Simplify right side
    1,292.68x = 2,201,928.39
  5. Step 5: Solve for x
    x = 2,201,928.39/1,292.68
  6. Step 6: Final answer
    x = 1,703.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.