Home / 2,455.79-3,388.96-1,351.79

Finding the Fourth Proportional to 2,455.79, 3,388.96 and 1,351.79

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Solution

The fourth proportional to 2,455.79, 3,388.96 and 1,351.79 is: 1,865.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.79 : 3,388.96 = 1,351.79 : x
  2. Step 2: Convert to fraction form
    2,455.79/3,388.96 = 1,351.79/x
  3. Step 3: Cross multiply
    2,455.79x = 3,388.96 × 1,351.79
  4. Step 4: Simplify right side
    2,455.79x = 4,581,155.48
  5. Step 5: Solve for x
    x = 4,581,155.48/2,455.79
  6. Step 6: Final answer
    x = 1,865.45

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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.