Home / 1,425.34-2,138.37-1,270.22

Finding the Fourth Proportional to 1,425.34, 2,138.37 and 1,270.22

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Solution

The fourth proportional to 1,425.34, 2,138.37 and 1,270.22 is: 1,905.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.34 : 2,138.37 = 1,270.22 : x
  2. Step 2: Convert to fraction form
    1,425.34/2,138.37 = 1,270.22/x
  3. Step 3: Cross multiply
    1,425.34x = 2,138.37 × 1,270.22
  4. Step 4: Simplify right side
    1,425.34x = 2,716,200.34
  5. Step 5: Solve for x
    x = 2,716,200.34/1,425.34
  6. Step 6: Final answer
    x = 1,905.66

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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.