Home / 1,427.72-2,140.32-1,341.68

Finding the Fourth Proportional to 1,427.72, 2,140.32 and 1,341.68

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Solution

The fourth proportional to 1,427.72, 2,140.32 and 1,341.68 is: 2,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.72 : 2,140.32 = 1,341.68 : x
  2. Step 2: Convert to fraction form
    1,427.72/2,140.32 = 1,341.68/x
  3. Step 3: Cross multiply
    1,427.72x = 2,140.32 × 1,341.68
  4. Step 4: Simplify right side
    1,427.72x = 2,871,624.54
  5. Step 5: Solve for x
    x = 2,871,624.54/1,427.72
  6. Step 6: Final answer
    x = 2,011.34

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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.