Home / 3,981.33-5,496.28-2,807.64

Finding the Fourth Proportional to 3,981.33, 5,496.28 and 2,807.64

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Solution

The fourth proportional to 3,981.33, 5,496.28 and 2,807.64 is: 3,875.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.33 : 5,496.28 = 2,807.64 : x
  2. Step 2: Convert to fraction form
    3,981.33/5,496.28 = 2,807.64/x
  3. Step 3: Cross multiply
    3,981.33x = 5,496.28 × 2,807.64
  4. Step 4: Simplify right side
    3,981.33x = 15,431,575.58
  5. Step 5: Solve for x
    x = 15,431,575.58/3,981.33
  6. Step 6: Final answer
    x = 3,875.99

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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.