Home / 2,126.07-3,190.56-739.40

Finding the Fourth Proportional to 2,126.07, 3,190.56 and 739.40

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Solution

The fourth proportional to 2,126.07, 3,190.56 and 739.40 is: 1,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.07 : 3,190.56 = 739.40 : x
  2. Step 2: Convert to fraction form
    2,126.07/3,190.56 = 739.40/x
  3. Step 3: Cross multiply
    2,126.07x = 3,190.56 × 739.40
  4. Step 4: Simplify right side
    2,126.07x = 2,359,084.46
  5. Step 5: Solve for x
    x = 2,359,084.46/2,126.07
  6. Step 6: Final answer
    x = 1,109.60

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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.