Home / 5,383.80-7,430.40-3,145.14

Finding the Fourth Proportional to 5,383.80, 7,430.40 and 3,145.14

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Solution

The fourth proportional to 5,383.80, 7,430.40 and 3,145.14 is: 4,340.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,383.80 : 7,430.40 = 3,145.14 : x
  2. Step 2: Convert to fraction form
    5,383.80/7,430.40 = 3,145.14/x
  3. Step 3: Cross multiply
    5,383.80x = 7,430.40 × 3,145.14
  4. Step 4: Simplify right side
    5,383.80x = 23,369,648.26
  5. Step 5: Solve for x
    x = 23,369,648.26/5,383.80
  6. Step 6: Final answer
    x = 4,340.73

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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.