Home / 2,439.48-3,365.20-1,553.74

Finding the Fourth Proportional to 2,439.48, 3,365.20 and 1,553.74

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Solution

The fourth proportional to 2,439.48, 3,365.20 and 1,553.74 is: 2,143.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.48 : 3,365.20 = 1,553.74 : x
  2. Step 2: Convert to fraction form
    2,439.48/3,365.20 = 1,553.74/x
  3. Step 3: Cross multiply
    2,439.48x = 3,365.20 × 1,553.74
  4. Step 4: Simplify right side
    2,439.48x = 5,228,645.85
  5. Step 5: Solve for x
    x = 5,228,645.85/2,439.48
  6. Step 6: Final answer
    x = 2,143.34

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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.