Home / 5,479.50-8,214.64-2,190.80

Finding the Fourth Proportional to 5,479.50, 8,214.64 and 2,190.80

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Solution

The fourth proportional to 5,479.50, 8,214.64 and 2,190.80 is: 3,284.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.50 : 8,214.64 = 2,190.80 : x
  2. Step 2: Convert to fraction form
    5,479.50/8,214.64 = 2,190.80/x
  3. Step 3: Cross multiply
    5,479.50x = 8,214.64 × 2,190.80
  4. Step 4: Simplify right side
    5,479.50x = 17,996,602.16
  5. Step 5: Solve for x
    x = 17,996,602.16/5,479.50
  6. Step 6: Final answer
    x = 3,284.35

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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.