Home / 3,720.12-5,131.80-2,323.68

Finding the Fourth Proportional to 3,720.12, 5,131.80 and 2,323.68

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Solution

The fourth proportional to 3,720.12, 5,131.80 and 2,323.68 is: 3,205.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.12 : 5,131.80 = 2,323.68 : x
  2. Step 2: Convert to fraction form
    3,720.12/5,131.80 = 2,323.68/x
  3. Step 3: Cross multiply
    3,720.12x = 5,131.80 × 2,323.68
  4. Step 4: Simplify right side
    3,720.12x = 11,924,661.02
  5. Step 5: Solve for x
    x = 11,924,661.02/3,720.12
  6. Step 6: Final answer
    x = 3,205.45

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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.