Home / 1,256.98-1,733.67-1,115.38

Finding the Fourth Proportional to 1,256.98, 1,733.67 and 1,115.38

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Solution

The fourth proportional to 1,256.98, 1,733.67 and 1,115.38 is: 1,538.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.98 : 1,733.67 = 1,115.38 : x
  2. Step 2: Convert to fraction form
    1,256.98/1,733.67 = 1,115.38/x
  3. Step 3: Cross multiply
    1,256.98x = 1,733.67 × 1,115.38
  4. Step 4: Simplify right side
    1,256.98x = 1,933,700.84
  5. Step 5: Solve for x
    x = 1,933,700.84/1,256.98
  6. Step 6: Final answer
    x = 1,538.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.