Home / 5,459.20-8,172.60-3,612.40

Finding the Fourth Proportional to 5,459.20, 8,172.60 and 3,612.40

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Solution

The fourth proportional to 5,459.20, 8,172.60 and 3,612.40 is: 5,407.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.20 : 8,172.60 = 3,612.40 : x
  2. Step 2: Convert to fraction form
    5,459.20/8,172.60 = 3,612.40/x
  3. Step 3: Cross multiply
    5,459.20x = 8,172.60 × 3,612.40
  4. Step 4: Simplify right side
    5,459.20x = 29,522,700.24
  5. Step 5: Solve for x
    x = 29,522,700.24/5,459.20
  6. Step 6: Final answer
    x = 5,407.88

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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.