Home / 5,421.08-8,129.84-2,088.54

Finding the Fourth Proportional to 5,421.08, 8,129.84 and 2,088.54

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Solution

The fourth proportional to 5,421.08, 8,129.84 and 2,088.54 is: 3,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.08 : 8,129.84 = 2,088.54 : x
  2. Step 2: Convert to fraction form
    5,421.08/8,129.84 = 2,088.54/x
  3. Step 3: Cross multiply
    5,421.08x = 8,129.84 × 2,088.54
  4. Step 4: Simplify right side
    5,421.08x = 16,979,485.59
  5. Step 5: Solve for x
    x = 16,979,485.59/5,421.08
  6. Step 6: Final answer
    x = 3,132.12

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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.