Home / 5,478.12-8,208.54-2,189.16

Finding the Fourth Proportional to 5,478.12, 8,208.54 and 2,189.16

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Solution

The fourth proportional to 5,478.12, 8,208.54 and 2,189.16 is: 3,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.12 : 8,208.54 = 2,189.16 : x
  2. Step 2: Convert to fraction form
    5,478.12/8,208.54 = 2,189.16/x
  3. Step 3: Cross multiply
    5,478.12x = 8,208.54 × 2,189.16
  4. Step 4: Simplify right side
    5,478.12x = 17,969,807.43
  5. Step 5: Solve for x
    x = 17,969,807.43/5,478.12
  6. Step 6: Final answer
    x = 3,280.29

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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.