Home / 5,451.10-8,188.80-5,305.30

Finding the Fourth Proportional to 5,451.10, 8,188.80 and 5,305.30

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Solution

The fourth proportional to 5,451.10, 8,188.80 and 5,305.30 is: 7,969.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.10 : 8,188.80 = 5,305.30 : x
  2. Step 2: Convert to fraction form
    5,451.10/8,188.80 = 5,305.30/x
  3. Step 3: Cross multiply
    5,451.10x = 8,188.80 × 5,305.30
  4. Step 4: Simplify right side
    5,451.10x = 43,444,040.64
  5. Step 5: Solve for x
    x = 43,444,040.64/5,451.10
  6. Step 6: Final answer
    x = 7,969.78

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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.