Home / 2,455.45-3,388.55-1,407.50

Finding the Fourth Proportional to 2,455.45, 3,388.55 and 1,407.50

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Solution

The fourth proportional to 2,455.45, 3,388.55 and 1,407.50 is: 1,942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.45 : 3,388.55 = 1,407.50 : x
  2. Step 2: Convert to fraction form
    2,455.45/3,388.55 = 1,407.50/x
  3. Step 3: Cross multiply
    2,455.45x = 3,388.55 × 1,407.50
  4. Step 4: Simplify right side
    2,455.45x = 4,769,377.09
  5. Step 5: Solve for x
    x = 4,769,377.09/2,455.45
  6. Step 6: Final answer
    x = 1,942.37

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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.