Home / 5,111.28-7,055.54-3,935.76

Finding the Fourth Proportional to 5,111.28, 7,055.54 and 3,935.76

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Solution

The fourth proportional to 5,111.28, 7,055.54 and 3,935.76 is: 5,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.28 : 7,055.54 = 3,935.76 : x
  2. Step 2: Convert to fraction form
    5,111.28/7,055.54 = 3,935.76/x
  3. Step 3: Cross multiply
    5,111.28x = 7,055.54 × 3,935.76
  4. Step 4: Simplify right side
    5,111.28x = 27,768,912.11
  5. Step 5: Solve for x
    x = 27,768,912.11/5,111.28
  6. Step 6: Final answer
    x = 5,432.87

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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.