Home / 3,921.84-5,412.33-2,430.54

Finding the Fourth Proportional to 3,921.84, 5,412.33 and 2,430.54

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Solution

The fourth proportional to 3,921.84, 5,412.33 and 2,430.54 is: 3,354.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.84 : 5,412.33 = 2,430.54 : x
  2. Step 2: Convert to fraction form
    3,921.84/5,412.33 = 2,430.54/x
  3. Step 3: Cross multiply
    3,921.84x = 5,412.33 × 2,430.54
  4. Step 4: Simplify right side
    3,921.84x = 13,154,884.56
  5. Step 5: Solve for x
    x = 13,154,884.56/3,921.84
  6. Step 6: Final answer
    x = 3,354.26

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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.