Home / 3,430.32-5,144.58-1,238.64

Finding the Fourth Proportional to 3,430.32, 5,144.58 and 1,238.64

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Solution

The fourth proportional to 3,430.32, 5,144.58 and 1,238.64 is: 1,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.32 : 5,144.58 = 1,238.64 : x
  2. Step 2: Convert to fraction form
    3,430.32/5,144.58 = 1,238.64/x
  3. Step 3: Cross multiply
    3,430.32x = 5,144.58 × 1,238.64
  4. Step 4: Simplify right side
    3,430.32x = 6,372,282.57
  5. Step 5: Solve for x
    x = 6,372,282.57/3,430.32
  6. Step 6: Final answer
    x = 1,857.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.