Home / 3,430.23-5,145.33-1,238.92

Finding the Fourth Proportional to 3,430.23, 5,145.33 and 1,238.92

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Solution

The fourth proportional to 3,430.23, 5,145.33 and 1,238.92 is: 1,858.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.23 : 5,145.33 = 1,238.92 : x
  2. Step 2: Convert to fraction form
    3,430.23/5,145.33 = 1,238.92/x
  3. Step 3: Cross multiply
    3,430.23x = 5,145.33 × 1,238.92
  4. Step 4: Simplify right side
    3,430.23x = 6,374,652.24
  5. Step 5: Solve for x
    x = 6,374,652.24/3,430.23
  6. Step 6: Final answer
    x = 1,858.37

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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.