Home / 2,421.92-3,342.24-1,427.20

Finding the Fourth Proportional to 2,421.92, 3,342.24 and 1,427.20

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Solution

The fourth proportional to 2,421.92, 3,342.24 and 1,427.20 is: 1,969.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.92 : 3,342.24 = 1,427.20 : x
  2. Step 2: Convert to fraction form
    2,421.92/3,342.24 = 1,427.20/x
  3. Step 3: Cross multiply
    2,421.92x = 3,342.24 × 1,427.20
  4. Step 4: Simplify right side
    2,421.92x = 4,770,044.93
  5. Step 5: Solve for x
    x = 4,770,044.93/2,421.92
  6. Step 6: Final answer
    x = 1,969.53

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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.