Home / 5,406.72-8,106.96-2,631.12

Finding the Fourth Proportional to 5,406.72, 8,106.96 and 2,631.12

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Solution

The fourth proportional to 5,406.72, 8,106.96 and 2,631.12 is: 3,945.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.72 : 8,106.96 = 2,631.12 : x
  2. Step 2: Convert to fraction form
    5,406.72/8,106.96 = 2,631.12/x
  3. Step 3: Cross multiply
    5,406.72x = 8,106.96 × 2,631.12
  4. Step 4: Simplify right side
    5,406.72x = 21,330,384.60
  5. Step 5: Solve for x
    x = 21,330,384.60/5,406.72
  6. Step 6: Final answer
    x = 3,945.16

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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.