Home / 3,914.95-5,399.47-2,421.82

Finding the Fourth Proportional to 3,914.95, 5,399.47 and 2,421.82

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Solution

The fourth proportional to 3,914.95, 5,399.47 and 2,421.82 is: 3,340.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.95 : 5,399.47 = 2,421.82 : x
  2. Step 2: Convert to fraction form
    3,914.95/5,399.47 = 2,421.82/x
  3. Step 3: Cross multiply
    3,914.95x = 5,399.47 × 2,421.82
  4. Step 4: Simplify right side
    3,914.95x = 13,076,544.44
  5. Step 5: Solve for x
    x = 13,076,544.44/3,914.95
  6. Step 6: Final answer
    x = 3,340.16

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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.