Home / 5,459.20-8,188.80-4,940.80

Finding the Fourth Proportional to 5,459.20, 8,188.80 and 4,940.80

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Solution

The fourth proportional to 5,459.20, 8,188.80 and 4,940.80 is: 7,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.20 : 8,188.80 = 4,940.80 : x
  2. Step 2: Convert to fraction form
    5,459.20/8,188.80 = 4,940.80/x
  3. Step 3: Cross multiply
    5,459.20x = 8,188.80 × 4,940.80
  4. Step 4: Simplify right side
    5,459.20x = 40,459,223.04
  5. Step 5: Solve for x
    x = 40,459,223.04/5,459.20
  6. Step 6: Final answer
    x = 7,411.20

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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.