Home / 7,156.20-10,712.70-6,378.60

Finding the Fourth Proportional to 7,156.20, 10,712.70 and 6,378.60

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Solution

The fourth proportional to 7,156.20, 10,712.70 and 6,378.60 is: 9,548.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.20 : 10,712.70 = 6,378.60 : x
  2. Step 2: Convert to fraction form
    7,156.20/10,712.70 = 6,378.60/x
  3. Step 3: Cross multiply
    7,156.20x = 10,712.70 × 6,378.60
  4. Step 4: Simplify right side
    7,156.20x = 68,332,028.22
  5. Step 5: Solve for x
    x = 68,332,028.22/7,156.20
  6. Step 6: Final answer
    x = 9,548.65

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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.