Home / 3,888.10-5,365.69-2,119.82

Finding the Fourth Proportional to 3,888.10, 5,365.69 and 2,119.82

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Solution

The fourth proportional to 3,888.10, 5,365.69 and 2,119.82 is: 2,925.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.10 : 5,365.69 = 2,119.82 : x
  2. Step 2: Convert to fraction form
    3,888.10/5,365.69 = 2,119.82/x
  3. Step 3: Cross multiply
    3,888.10x = 5,365.69 × 2,119.82
  4. Step 4: Simplify right side
    3,888.10x = 11,374,296.98
  5. Step 5: Solve for x
    x = 11,374,296.98/3,888.10
  6. Step 6: Final answer
    x = 2,925.41

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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.