Home / 7,213.20-10,819.80-4,718.40

Finding the Fourth Proportional to 7,213.20, 10,819.80 and 4,718.40

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Solution

The fourth proportional to 7,213.20, 10,819.80 and 4,718.40 is: 7,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.20 : 10,819.80 = 4,718.40 : x
  2. Step 2: Convert to fraction form
    7,213.20/10,819.80 = 4,718.40/x
  3. Step 3: Cross multiply
    7,213.20x = 10,819.80 × 4,718.40
  4. Step 4: Simplify right side
    7,213.20x = 51,052,144.32
  5. Step 5: Solve for x
    x = 51,052,144.32/7,213.20
  6. Step 6: Final answer
    x = 7,077.60

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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.