Home / 3,888.12-5,855.43-3,406.98

Finding the Fourth Proportional to 3,888.12, 5,855.43 and 3,406.98

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Solution

The fourth proportional to 3,888.12, 5,855.43 and 3,406.98 is: 5,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.12 : 5,855.43 = 3,406.98 : x
  2. Step 2: Convert to fraction form
    3,888.12/5,855.43 = 3,406.98/x
  3. Step 3: Cross multiply
    3,888.12x = 5,855.43 × 3,406.98
  4. Step 4: Simplify right side
    3,888.12x = 19,949,332.90
  5. Step 5: Solve for x
    x = 19,949,332.90/3,888.12
  6. Step 6: Final answer
    x = 5,130.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.