Home / 7,222.60-10,812.78-6,530.86

Finding the Fourth Proportional to 7,222.60, 10,812.78 and 6,530.86

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Solution

The fourth proportional to 7,222.60, 10,812.78 and 6,530.86 is: 9,777.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.60 : 10,812.78 = 6,530.86 : x
  2. Step 2: Convert to fraction form
    7,222.60/10,812.78 = 6,530.86/x
  3. Step 3: Cross multiply
    7,222.60x = 10,812.78 × 6,530.86
  4. Step 4: Simplify right side
    7,222.60x = 70,616,752.39
  5. Step 5: Solve for x
    x = 70,616,752.39/7,222.60
  6. Step 6: Final answer
    x = 9,777.19

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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.