Home / 3,851.76-5,305.32-3,623.40

Finding the Fourth Proportional to 3,851.76, 5,305.32 and 3,623.40

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Solution

The fourth proportional to 3,851.76, 5,305.32 and 3,623.40 is: 4,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.76 : 5,305.32 = 3,623.40 : x
  2. Step 2: Convert to fraction form
    3,851.76/5,305.32 = 3,623.40/x
  3. Step 3: Cross multiply
    3,851.76x = 5,305.32 × 3,623.40
  4. Step 4: Simplify right side
    3,851.76x = 19,223,296.49
  5. Step 5: Solve for x
    x = 19,223,296.49/3,851.76
  6. Step 6: Final answer
    x = 4,990.78

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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.