Home / 3,933.76-5,428.35-2,254.81

Finding the Fourth Proportional to 3,933.76, 5,428.35 and 2,254.81

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Solution

The fourth proportional to 3,933.76, 5,428.35 and 2,254.81 is: 3,111.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.76 : 5,428.35 = 2,254.81 : x
  2. Step 2: Convert to fraction form
    3,933.76/5,428.35 = 2,254.81/x
  3. Step 3: Cross multiply
    3,933.76x = 5,428.35 × 2,254.81
  4. Step 4: Simplify right side
    3,933.76x = 12,239,897.86
  5. Step 5: Solve for x
    x = 12,239,897.86/3,933.76
  6. Step 6: Final answer
    x = 3,111.50

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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.