Home / 7,217.20-9,960.60-4,074.40

Finding the Fourth Proportional to 7,217.20, 9,960.60 and 4,074.40

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Solution

The fourth proportional to 7,217.20, 9,960.60 and 4,074.40 is: 5,623.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,217.20 : 9,960.60 = 4,074.40 : x
  2. Step 2: Convert to fraction form
    7,217.20/9,960.60 = 4,074.40/x
  3. Step 3: Cross multiply
    7,217.20x = 9,960.60 × 4,074.40
  4. Step 4: Simplify right side
    7,217.20x = 40,583,468.64
  5. Step 5: Solve for x
    x = 40,583,468.64/7,217.20
  6. Step 6: Final answer
    x = 5,623.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.