Home / 5,731.12-7,904.28-3,867.76

Finding the Fourth Proportional to 5,731.12, 7,904.28 and 3,867.76

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Solution

The fourth proportional to 5,731.12, 7,904.28 and 3,867.76 is: 5,334.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,731.12 : 7,904.28 = 3,867.76 : x
  2. Step 2: Convert to fraction form
    5,731.12/7,904.28 = 3,867.76/x
  3. Step 3: Cross multiply
    5,731.12x = 7,904.28 × 3,867.76
  4. Step 4: Simplify right side
    5,731.12x = 30,571,858.01
  5. Step 5: Solve for x
    x = 30,571,858.01/5,731.12
  6. Step 6: Final answer
    x = 5,334.36

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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.