Home / 1,407.14-1,939.58-1,126.93

Finding the Fourth Proportional to 1,407.14, 1,939.58 and 1,126.93

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Solution

The fourth proportional to 1,407.14, 1,939.58 and 1,126.93 is: 1,553.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.14 : 1,939.58 = 1,126.93 : x
  2. Step 2: Convert to fraction form
    1,407.14/1,939.58 = 1,126.93/x
  3. Step 3: Cross multiply
    1,407.14x = 1,939.58 × 1,126.93
  4. Step 4: Simplify right side
    1,407.14x = 2,185,755.56
  5. Step 5: Solve for x
    x = 2,185,755.56/1,407.14
  6. Step 6: Final answer
    x = 1,553.34

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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.