Home / 5,428.36-8,142.56-3,956.96

Finding the Fourth Proportional to 5,428.36, 8,142.56 and 3,956.96

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Solution

The fourth proportional to 5,428.36, 8,142.56 and 3,956.96 is: 5,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.36 : 8,142.56 = 3,956.96 : x
  2. Step 2: Convert to fraction form
    5,428.36/8,142.56 = 3,956.96/x
  3. Step 3: Cross multiply
    5,428.36x = 8,142.56 × 3,956.96
  4. Step 4: Simplify right side
    5,428.36x = 32,219,784.22
  5. Step 5: Solve for x
    x = 32,219,784.22/5,428.36
  6. Step 6: Final answer
    x = 5,935.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.