Home / 3,922.12-5,412.66-2,430.16

Finding the Fourth Proportional to 3,922.12, 5,412.66 and 2,430.16

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Solution

The fourth proportional to 3,922.12, 5,412.66 and 2,430.16 is: 3,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.12 : 5,412.66 = 2,430.16 : x
  2. Step 2: Convert to fraction form
    3,922.12/5,412.66 = 2,430.16/x
  3. Step 3: Cross multiply
    3,922.12x = 5,412.66 × 2,430.16
  4. Step 4: Simplify right side
    3,922.12x = 13,153,629.83
  5. Step 5: Solve for x
    x = 13,153,629.83/3,922.12
  6. Step 6: Final answer
    x = 3,353.70

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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.