Home / 2,126.49-3,190.64-739.07

Finding the Fourth Proportional to 2,126.49, 3,190.64 and 739.07

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Solution

The fourth proportional to 2,126.49, 3,190.64 and 739.07 is: 1,108.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.49 : 3,190.64 = 739.07 : x
  2. Step 2: Convert to fraction form
    2,126.49/3,190.64 = 739.07/x
  3. Step 3: Cross multiply
    2,126.49x = 3,190.64 × 739.07
  4. Step 4: Simplify right side
    2,126.49x = 2,358,095.88
  5. Step 5: Solve for x
    x = 2,358,095.88/2,126.49
  6. Step 6: Final answer
    x = 1,108.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.