Home / 3,888.20-5,365.60-2,119.77

Finding the Fourth Proportional to 3,888.20, 5,365.60 and 2,119.77

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Solution

The fourth proportional to 3,888.20, 5,365.60 and 2,119.77 is: 2,925.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.20 : 5,365.60 = 2,119.77 : x
  2. Step 2: Convert to fraction form
    3,888.20/5,365.60 = 2,119.77/x
  3. Step 3: Cross multiply
    3,888.20x = 5,365.60 × 2,119.77
  4. Step 4: Simplify right side
    3,888.20x = 11,373,832.61
  5. Step 5: Solve for x
    x = 11,373,832.61/3,888.20
  6. Step 6: Final answer
    x = 2,925.22

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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.