Home / 7,117.20-10,659.60-4,492.80

Finding the Fourth Proportional to 7,117.20, 10,659.60 and 4,492.80

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Solution

The fourth proportional to 7,117.20, 10,659.60 and 4,492.80 is: 6,728.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.20 : 10,659.60 = 4,492.80 : x
  2. Step 2: Convert to fraction form
    7,117.20/10,659.60 = 4,492.80/x
  3. Step 3: Cross multiply
    7,117.20x = 10,659.60 × 4,492.80
  4. Step 4: Simplify right side
    7,117.20x = 47,891,450.88
  5. Step 5: Solve for x
    x = 47,891,450.88/7,117.20
  6. Step 6: Final answer
    x = 6,728.97

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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.