Home / 2,455.39-3,388.26-1,407.25

Finding the Fourth Proportional to 2,455.39, 3,388.26 and 1,407.25

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Solution

The fourth proportional to 2,455.39, 3,388.26 and 1,407.25 is: 1,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.39 : 3,388.26 = 1,407.25 : x
  2. Step 2: Convert to fraction form
    2,455.39/3,388.26 = 1,407.25/x
  3. Step 3: Cross multiply
    2,455.39x = 3,388.26 × 1,407.25
  4. Step 4: Simplify right side
    2,455.39x = 4,768,128.89
  5. Step 5: Solve for x
    x = 4,768,128.89/2,455.39
  6. Step 6: Final answer
    x = 1,941.90

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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.